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| Date | Max Price | Avg Price | # Prices |
|---|---|---|---|
| 2012-02-02 | $26.59 | $15.15 | 21 |
| 2012-02-01 | $23.20 | $14.29 | 29 |
| 2012-01-31 | $25.92 | $14.41 | 38 |
| 2012-01-30 | $24.46 | $14.04 | 19 |
| 2012-01-29 | $24.79 | $13.89 | 23 |
| 2012-01-28 | $24.76 | $13.69 | 8 |
| 2012-01-27 | $25.46 | $12.22 | 18 |
| 2012-01-26 | $22.78 | $11.58 | 35 |
| 2012-01-25 | $19.22 | $10.04 | 63 |
| 2012-01-24 | $17.43 | $9.75 | 26 |
| 2012-01-23 | $16.37 | $9.53 | 47 |
| 2012-01-22 | $14.00 | $9.06 | 33 |
| 2012-01-21 | $19.40 | $10.05 | 70 |
| 2012-01-20 | $23.11 | $10.64 | 54 |
| 2012-01-19 | $23.49 | $13.29 | 66 |
| 2012-01-17 | $23.74 | $13.43 | 38 |
| 2012-01-16 | $22.39 | $13.00 | 56 |
| 2012-01-15 | $24.15 | $13.79 | 21 |
| 2012-01-14 | $24.31 | $14.25 | 37 |
| 2012-01-13 | $24.14 | $12.46 | 85 |
| 2012-01-12 | $23.72 | $12.14 | 30 |
| 2012-01-10 | $18.60 | $8.61 | 58 |
| 2012-01-09 | $19.50 | $8.77 | 132 |
| 2012-01-08 | $19.03 | $8.36 | 19 |
| 2012-01-07 | $15.33 | $6.73 | 48 |
| 2012-01-06 | $9.18 | $5.44 | 94 |
| 2012-01-05 | $13.08 | $6.54 | 34 |
| 2012-01-04 | $13.08 | $6.40 | 47 |
| 2012-01-03 | $12.40 | $6.72 | 84 |
| 2012-01-02 | $10.73 | $6.17 | 24 |
| 2012-01-01 | $11.56 | $5.67 | 29 |
| 2011-12-31 | $9.16 | $5.30 | 37 |
| 2011-12-30 | $7.94 | $4.35 | 84 |
| 2011-12-29 | $8.53 | $5.03 | 7 |
| 2011-12-28 | $8.11 | $4.74 | 54 |
| 2011-12-27 | $8.39 | $4.93 | 43 |
| 2011-12-26 | $8.39 | $4.90 | 50 |
| 2011-12-24 | $8.25 | $5.05 | 18 |
| 2011-12-23 | $8.27 | $4.72 | 24 |
| 2011-12-22 | $5.75 | $4.13 | 7 |
| 2011-12-21 | $4.50 | $3.38 | 18 |
| 2011-12-20 | $4.32 | $3.42 | 18 |
| 2011-12-19 | $4.50 | $3.47 | 6 |
| 2011-12-17 | $5.41 | $2.91 | 15 |
| 2011-12-16 | $5.50 | $3.31 | 18 |
| 2011-12-15 | $5.75 | $3.71 | 87 |
| 2011-12-14 | $5.66 | $3.22 | 18 |
| 2011-12-13 | $7.70 | $3.71 | 24 |
| 2011-12-12 | $5.50 | $3.33 | 32 |
| 2011-12-11 | $6.05 | $3.77 | 64 |
| 2011-12-10 | $6.15 | $3.78 | 20 |
| 2011-12-09 | $6.53 | $3.93 | 32 |
| 2011-12-08 | $7.40 | $4.18 | 103 |
| 2011-12-07 | $8.39 | $3.97 | 67 |
| 2011-12-06 | $8.07 | $3.63 | 61 |
| 2011-12-05 | $6.05 | $3.11 | 9 |
| 2011-12-03 | $7.20 | $5.10 | 10 |
| 2011-12-02 | $6.61 | $3.92 | 18 |
| 2011-12-01 | $6.75 | $4.64 | 22 |
| 2011-11-30 | $6.75 | $4.74 | 13 |
| 2011-11-29 | $6.75 | $4.25 | 7 |
| 2011-11-28 | $8.25 | $5.10 | 20 |
| 2011-11-26 | $6.75 | $5.16 | 8 |
| 2011-11-21 | $6.00 | $4.12 | 5 |
| 2011-11-17 | $4.66 | $3.05 | 28 |
| 2011-11-16 | $4.17 | $2.50 | 18 |
| 2011-11-15 | $3.76 | $2.56 | 5 |
| 2011-11-13 | $14.33 | $4.76 | 29 |
| 2011-11-12 | $14.33 | $5.19 | 8 |
| 2011-11-11 | $14.33 | $5.05 | 8 |
| 2011-11-09 | $5.77 | $4.78 | 2 |
| 2011-11-08 | $14.33 | $4.93 | 7 |
| 2011-11-06 | $14.33 | $5.19 | 6 |
| 2011-11-05 | $14.33 | $5.12 | 13 |
| 2011-11-04 | $14.33 | $5.58 | 5 |
| 2011-11-02 | $14.33 | $4.80 | 15 |
| 2011-10-29 | $7.04 | $7.04 | 1 |
| 2011-10-28 | $14.33 | $4.14 | 8 |
| 2011-10-27 | $14.33 | $4.34 | 37 |
| 2011-10-26 | $14.33 | $5.88 | 29 |
| 2011-10-24 | $14.33 | $6.52 | 11 |
| 2011-10-22 | $14.33 | $6.24 | 20 |
| 2011-10-21 | $14.33 | $7.01 | 9 |
| 2011-10-20 | $14.33 | $6.39 | 24 |
| 2011-10-19 | $14.33 | $6.15 | 15 |
| 2011-10-16 | $14.33 | $6.94 | 16 |
| 2011-10-13 | $14.33 | $6.76 | 13 |
| 2011-10-12 | $14.33 | $6.88 | 12 |
| 2011-10-11 | $14.33 | $6.61 | 61 |
| 2011-10-10 | $14.33 | $6.31 | 22 |
| 2011-10-09 | $14.33 | $6.89 | 50 |
| 2011-10-08 | $14.33 | $6.72 | 25 |
| 2011-10-06 | $14.33 | $7.12 | 29 |
| 2011-10-05 | $15.00 | $8.24 | 21 |
| 2011-10-03 | $16.00 | $8.60 | 10 |
| 2011-10-02 | $15.25 | $8.17 | 40 |
| 2011-10-01 | $14.75 | $8.45 | 11 |
| 2011-09-30 | $14.33 | $7.69 | 10 |
| 2011-09-27 | $15.50 | $9.43 | 9 |
| 2011-09-26 | $28.93 | $10.33 | 70 |
| 2011-09-25 | $28.93 | $10.42 | 21 |
| 2011-09-23 | $34.96 | $12.81 | 30 |
| 2011-09-21 | $31.90 | $13.29 | 35 |
| 2011-09-20 | $43.42 | $12.93 | 18 |
| 2011-09-17 | $43.42 | $15.55 | 18 |
| 2011-09-16 | $25.22 | $15.84 | 18 |
| 2011-09-15 | $43.64 | $17.74 | 9 |
| 2011-09-14 | $43.64 | $17.09 | 10 |
| 2011-09-12 | $43.64 | $20.20 | 12 |
| 2011-09-11 | $43.64 | $16.86 | 24 |
| 2011-09-10 | $43.64 | $19.76 | 12 |
| 2011-09-09 | $43.64 | $19.34 | 22 |
| 2011-09-08 | $43.64 | $20.40 | 12 |
| 2011-09-07 | $55.65 | $22.48 | 19 |
| 2011-09-05 | $60.99 | $21.33 | 36 |
| 2011-09-04 | $31.00 | $19.44 | 12 |
| 2011-09-02 | $60.99 | $24.25 | 57 |
| 2011-09-01 | $60.99 | $24.33 | 24 |
| 2011-08-31 | $60.99 | $22.44 | 44 |
| 2011-08-30 | $60.99 | $21.00 | 70 |
| 2011-08-29 | $55.66 | $22.12 | 35 |
| 2011-08-27 | $57.17 | $23.10 | 12 |
| 2011-08-26 | $57.17 | $23.45 | 12 |
| 2011-08-25 | $32.25 | $19.79 | 11 |
| 2011-08-24 | $43.54 | $21.38 | 84 |
| 2011-08-23 | $43.54 | $21.42 | 36 |
| 2011-08-22 | $27.46 | $16.56 | 11 |
| 2011-08-21 | $63.13 | $19.23 | 54 |
| 2011-08-20 | $63.13 | $18.68 | 23 |
| 2011-08-19 | $63.13 | $16.27 | 57 |
| 2011-08-18 | $28.89 | $16.26 | 37 |
| 2011-08-17 | $25.26 | $15.26 | 33 |
| 2011-08-16 | $63.13 | $16.42 | 35 |
| 2011-08-15 | $63.13 | $14.07 | 107 |
| 2011-08-14 | $21.68 | $13.65 | 24 |
| 2011-08-13 | $63.13 | $17.86 | 13 |
| 2011-08-12 | $63.13 | $16.92 | 13 |
| 2011-08-11 | $20.45 | $12.96 | 24 |
| 2011-08-09 | $63.13 | $13.57 | 101 |
| 2011-08-07 | $63.13 | $14.73 | 26 |
| 2011-08-06 | $63.13 | $12.10 | 40 |
| 2011-08-05 | $16.18 | $10.77 | 13 |
| 2011-08-04 | $15.29 | $9.91 | 37 |
| 2011-08-03 | $14.99 | $9.91 | 90 |
| 2011-08-02 | $15.29 | $9.06 | 77 |
| 2011-08-01 | $19.15 | $9.58 | 51 |
| 2011-07-30 | $16.23 | $10.51 | 11 |
| 2011-07-29 | $14.99 | $9.75 | 9 |
| 2011-07-28 | $19.15 | $10.85 | 39 |
| 2011-07-27 | $19.15 | $9.45 | 42 |
| 2011-07-26 | $19.20 | $9.96 | 12 |
| 2011-07-25 | $19.84 | $11.35 | 48 |
| 2011-07-24 | $19.20 | $11.41 | 12 |
| 2011-07-22 | $22.37 | $11.73 | 55 |
| 2011-07-21 | $23.07 | $12.94 | 18 |
| 2011-07-20 | $19.20 | $11.91 | 18 |
| 2011-07-18 | $19.20 | $10.83 | 8 |
| 2011-07-17 | $19.20 | $11.68 | 33 |
| 2011-07-16 | $19.20 | $11.08 | 26 |
| 2011-07-14 | $22.72 | $14.94 | 9 |
| 2011-07-13 | $22.78 | $14.93 | 61 |
| 2011-07-12 | $19.20 | $12.58 | 42 |
| 2011-07-10 | $19.20 | $13.85 | 20 |
| 2011-07-08 | $21.91 | $13.13 | 21 |
| 2011-07-07 | $18.85 | $10.50 | 20 |
| 2011-07-05 | $16.50 | $9.81 | 20 |
| 2011-07-02 | $16.50 | $11.27 | 11 |
| 2011-07-01 | $21.50 | $10.88 | 20 |
| 2011-06-30 | $21.50 | $11.73 | 28 |
| 2011-06-29 | $21.50 | $13.94 | 10 |
| 2011-06-28 | $21.50 | $12.83 | 37 |
| 2011-06-27 | $21.50 | $12.70 | 68 |
| 2011-06-26 | $21.50 | $14.24 | 9 |
| 2011-06-25 | $21.50 | $13.89 | 41 |
| 2011-06-24 | $21.50 | $14.82 | 37 |
| 2011-06-23 | $21.50 | $14.61 | 46 |
| 2011-06-22 | $21.50 | $14.89 | 79 |
| 2011-06-21 | $21.50 | $12.00 | 36 |
| 2011-06-19 | $63.23 | $16.71 | 109 |
| 2011-06-18 | $63.23 | $17.95 | 33 |
| 2011-06-17 | $63.23 | $16.85 | 47 |
| 2011-06-16 | $63.23 | $13.78 | 20 |
| 2011-06-15 | $63.23 | $16.63 | 23 |
| 2011-06-14 | $63.23 | $18.45 | 66 |
| 2011-06-13 | $63.23 | $19.76 | 66 |
| 2011-06-12 | $63.23 | $20.04 | 34 |
| 2011-06-11 | $63.23 | $19.46 | 12 |
| 2011-06-10 | $63.23 | $18.75 | 120 |
| 2011-06-09 | $63.23 | $19.02 | 101 |
| 2011-06-08 | $63.23 | $20.32 | 214 |
| 2011-06-07 | $63.23 | $19.76 | 170 |
| 2011-06-06 | $63.23 | $19.71 | 178 |
| 2011-06-05 | $63.23 | $21.29 | 130 |
| 2011-06-04 | $63.23 | $18.73 | 48 |
| 2011-06-03 | $63.23 | $19.13 | 157 |
| 2011-06-02 | $63.23 | $19.54 | 235 |
| 2011-06-01 | $63.23 | $16.24 | 44 |
| 2011-05-31 | $63.23 | $15.98 | 210 |
| 2011-05-30 | $63.23 | $18.93 | 102 |
| 2011-05-29 | $63.23 | $20.10 | 74 |
| 2011-05-28 | $63.23 | $19.13 | 42 |
| 2011-05-27 | $63.23 | $20.12 | 98 |
| 2011-05-26 | $63.23 | $14.66 | 71 |
| 2011-05-25 | $19.25 | $14.05 | 142 |
| 2011-05-24 | $19.25 | $14.59 | 70 |
| 2011-05-23 | $18.77 | $14.44 | 68 |
| 2011-05-22 | $18.92 | $13.96 | 113 |
| 2011-05-21 | $19.40 | $14.77 | 36 |
| 2011-05-20 | $19.79 | $15.37 | 85 |
| 2011-05-19 | $27.86 | $14.53 | 103 |
| 2011-05-18 | $18.76 | $13.87 | 42 |
| 2011-05-17 | $20.09 | $13.26 | 138 |
| 2011-05-16 | $19.65 | $12.22 | 92 |
| 2011-05-15 | $18.48 | $11.65 | 40 |
| 2011-05-14 | $19.65 | $12.45 | 67 |
| 2011-05-13 | $20.38 | $13.99 | 87 |
| 2011-05-12 | $26.26 | $14.26 | 92 |
| 2011-05-11 | $26.26 | $14.93 | 45 |
| 2011-05-10 | $26.26 | $14.22 | 211 |
| 2011-05-09 | $26.26 | $13.92 | 139 |
| 2011-05-08 | $26.26 | $13.61 | 98 |
| 2011-05-07 | $26.26 | $14.66 | 24 |
| 2011-05-06 | $26.26 | $15.83 | 113 |
| 2011-05-05 | $29.82 | $15.52 | 147 |
| 2011-05-04 | $29.04 | $15.93 | 142 |
| 2011-05-03 | $29.83 | $17.37 | 53 |
| 2011-05-02 | $29.38 | $16.88 | 153 |
| 2011-05-01 | $27.46 | $17.56 | 32 |
| 2011-04-30 | $30.72 | $17.26 | 67 |
| 2011-04-29 | $33.23 | $18.25 | 95 |
| 2011-04-28 | $118.01 | $22.67 | 37 |
| 2011-04-27 | $118.01 | $27.21 | 78 |
| 2011-04-26 | $36.48 | $20.59 | 52 |
| 2011-04-25 | $34.14 | $17.42 | 35 |
| 2011-04-24 | $31.07 | $17.30 | 26 |
| 2011-04-23 | $36.48 | $19.26 | 97 |
| 2011-04-22 | $36.48 | $19.99 | 28 |
| 2011-04-21 | $24.16 | $18.44 | 9 |
| 2011-04-20 | $39.15 | $19.02 | 66 |
| 2011-04-19 | $40.45 | $23.69 | 11 |
| 2011-04-18 | $41.32 | $23.26 | 48 |
| 2011-04-17 | $51.81 | $24.68 | 38 |
| 2011-04-16 | $52.66 | $25.75 | 126 |
| 2011-04-15 | $51.51 | $26.76 | 11 |
| 2011-04-14 | $45.71 | $26.89 | 21 |
| 2011-04-13 | $47.81 | $27.29 | 12 |
| 2011-04-12 | $54.07 | $27.94 | 61 |
| 2011-04-11 | $53.00 | $29.46 | 23 |
| 2011-04-10 | $55.10 | $31.04 | 65 |
| 2011-04-09 | $51.18 | $28.15 | 42 |
| 2011-04-08 | $46.73 | $27.60 | 26 |
| 2011-04-07 | $51.18 | $29.73 | 26 |
| 2011-04-06 | $50.99 | $26.69 | 23 |
| 2011-04-05 | $53.00 | $30.99 | 24 |
| 2011-04-04 | $57.67 | $33.05 | 78 |
| 2011-04-03 | $55.90 | $32.93 | 28 |
| 2011-04-01 | $53.00 | $31.86 | 13 |
| 2011-03-31 | $53.23 | $31.90 | 14 |
| 2011-03-30 | $57.67 | $31.11 | 26 |
| 2011-03-29 | $55.90 | $29.64 | 42 |
| 2011-03-28 | $50.11 | $27.45 | 28 |
| 2011-03-27 | $50.11 | $27.59 | 14 |
| 2011-03-25 | $47.98 | $26.61 | 32 |
| 2011-03-24 | $55.20 | $26.16 | 60 |
| 2011-03-23 | $48.24 | $24.61 | 27 |
| 2011-03-22 | $48.75 | $24.26 | 62 |
| 2011-03-21 | $56.67 | $26.37 | 94 |
| 2011-03-20 | $56.67 | $29.48 | 14 |
| 2011-03-19 | $49.41 | $26.28 | 14 |
| 2011-03-18 | $59.36 | $28.29 | 90 |
| 2011-03-17 | $60.36 | $27.34 | 14 |
| 2011-03-16 | $61.18 | $28.77 | 60 |
| 2011-03-15 | $58.59 | $28.03 | 32 |
| 2011-03-14 | $57.57 | $25.90 | 30 |
| 2011-03-13 | $61.62 | $27.52 | 133 |
| 2011-03-12 | $54.40 | $27.06 | 14 |
| 2011-03-11 | $56.78 | $27.91 | 15 |
| 2011-03-10 | $58.90 | $26.12 | 110 |
| 2011-03-09 | $62.31 | $28.92 | 45 |
| 2011-03-08 | $60.32 | $27.29 | 29 |
| 2011-03-07 | $60.30 | $28.01 | 70 |
| 2011-03-06 | $53.29 | $27.17 | 45 |
| 2011-03-05 | $68.67 | $27.57 | 184 |
| 2011-03-04 | $58.56 | $30.21 | 15 |
| 2011-03-03 | $68.67 | $28.93 | 76 |
| 2011-03-02 | $58.56 | $25.85 | 90 |
| 2011-03-01 | $40.96 | $21.57 | 15 |
| 2011-02-28 | $68.67 | $20.76 | 76 |
| 2011-02-25 | $52.89 | $26.97 | 14 |
| 2011-02-24 | $68.67 | $26.01 | 29 |
| 2011-02-22 | $52.89 | $24.06 | 42 |
| 2011-02-21 | $52.89 | $23.09 | 42 |
| 2011-02-17 | $52.89 | $28.35 | 14 |
| 2011-02-14 | $62.10 | $37.27 | 14 |
| 2011-02-13 | $56.05 | $35.27 | 14 |
| 2011-02-12 | $61.22 | $32.53 | 14 |
| 2011-02-11 | $63.00 | $34.32 | 30 |
| 2011-02-10 | $79.07 | $38.52 | 151 |
| 2011-02-09 | $78.40 | $38.76 | 94 |
| 2011-02-08 | $78.09 | $36.67 | 14 |
| 2011-02-07 | $81.61 | $41.84 | 28 |
| 2011-02-06 | $74.52 | $40.96 | 14 |
| 2011-02-05 | $82.78 | $44.07 | 26 |
| 2011-02-04 | $81.65 | $43.82 | 22 |
| 2011-02-03 | $84.10 | $43.98 | 77 |
| 2011-02-02 | $84.10 | $46.52 | 51 |
| 2011-02-01 | $84.20 | $46.22 | 38 |
| 2011-01-31 | $84.20 | $46.33 | 51 |
| 2011-01-29 | $84.10 | $40.23 | 29 |
| 2011-01-28 | $84.10 | $40.30 | 27 |
| 2011-01-27 | $84.10 | $36.67 | 27 |
| 2011-01-26 | $86.33 | $40.34 | 128 |
| 2011-01-25 | $84.10 | $37.11 | 26 |
| 2011-01-24 | $84.10 | $42.10 | 99 |
| 2011-01-22 | $84.10 | $47.66 | 13 |
| 2011-01-21 | $96.98 | $52.39 | 53 |
| 2011-01-20 | $95.80 | $49.24 | 79 |
| 2011-01-19 | $94.21 | $46.01 | 42 |
| 2011-01-18 | $90.36 | $43.25 | 39 |
| 2011-01-17 | $84.92 | $47.58 | 26 |
| 2011-01-16 | $84.92 | $46.36 | 65 |
| 2011-01-15 | $84.10 | $45.32 | 39 |
| 2011-01-14 | $84.10 | $48.44 | 112 |
| 2011-01-13 | $87.80 | $46.89 | 45 |
| 2011-01-12 | $84.10 | $43.24 | 27 |
| 2011-01-11 | $84.10 | $48.64 | 68 |
| 2011-01-10 | $84.10 | $51.48 | 39 |
| 2011-01-09 | $86.98 | $45.55 | 103 |
| 2011-01-08 | $86.98 | $47.27 | 72 |
| 2011-01-07 | $86.04 | $52.16 | 13 |
| 2011-01-06 | $85.71 | $47.89 | 98 |
| 2011-01-05 | $86.40 | $47.62 | 29 |
| 2011-01-04 | $84.10 | $40.33 | 53 |
| 2011-01-03 | $84.10 | $38.21 | 11 |
| 2011-01-02 | $84.10 | $41.18 | 77 |
| 2011-01-01 | $84.10 | $39.61 | 31 |
| 2010-12-31 | $84.10 | $42.92 | 48 |
| 2010-12-29 | $84.10 | $42.37 | 32 |
| 2010-12-28 | $84.10 | $43.35 | 30 |
| 2010-12-27 | $84.10 | $40.94 | 100 |
| 2010-12-26 | $84.10 | $39.60 | 17 |
| 2010-12-24 | $84.10 | $40.62 | 16 |
| 2010-12-23 | $84.10 | $37.86 | 53 |
| 2010-12-22 | $84.10 | $39.92 | 68 |
| 2010-12-21 | $84.10 | $41.46 | 49 |
| 2010-12-20 | $84.10 | $39.68 | 80 |
| 2010-12-19 | $84.10 | $39.07 | 48 |
| 2010-12-18 | $84.10 | $36.59 | 101 |
| 2010-12-17 | $84.10 | $40.34 | 105 |
| 2010-12-16 | $84.10 | $36.08 | 259 |
| 2010-12-15 | $84.10 | $35.70 | 155 |
| 2010-12-14 | $84.10 | $41.60 | 92 |
| 2010-12-13 | $84.10 | $46.25 | 28 |
| 2010-12-12 | $84.10 | $45.52 | 55 |
| 2010-12-11 | $84.10 | $46.08 | 15 |
| 2010-12-10 | $84.10 | $44.89 | 30 |
| 2010-12-09 | $84.10 | $42.42 | 44 |
| 2010-12-08 | $84.10 | $40.73 | 433 |
| 2010-12-07 | $84.18 | $41.04 | 135 |
| 2010-12-06 | $84.10 | $42.13 | 89 |
| 2010-12-05 | $84.10 | $45.31 | 30 |
| 2010-12-04 | $84.10 | $44.77 | 15 |
| 2010-12-03 | $84.10 | $43.92 | 14 |
| 2010-12-02 | $84.10 | $47.31 | 90 |
| 2010-12-01 | $84.10 | $44.92 | 63 |
| 2010-11-30 | $84.10 | $42.63 | 14 |
| 2010-11-29 | $84.10 | $47.31 | 14 |
| 2010-11-27 | $84.10 | $42.02 | 14 |
| 2010-11-26 | $84.10 | $41.68 | 41 |
| 2010-11-25 | $84.10 | $41.33 | 28 |
| 2010-11-24 | $84.10 | $44.57 | 26 |
| 2010-11-22 | $84.10 | $54.24 | 26 |
| 2010-11-21 | $84.10 | $51.48 | 37 |
| 2010-11-19 | $84.10 | $56.51 | 26 |
| 2010-11-18 | $84.10 | $53.55 | 40 |
| 2010-11-17 | $84.10 | $54.06 | 56 |
| 2010-11-16 | $84.10 | $54.82 | 28 |
| 2010-11-13 | $78.00 | $51.08 | 13 |
| 2010-11-12 | $80.00 | $52.09 | 39 |
| 2010-11-10 | $80.00 | $53.87 | 56 |
| 2010-11-09 | $80.00 | $55.01 | 28 |
| 2010-11-08 | $80.00 | $48.82 | 32 |
| 2010-11-07 | $80.00 | $55.82 | 14 |
| 2010-11-06 | $80.00 | $59.12 | 13 |
| 2010-11-05 | $80.00 | $56.73 | 14 |
| 2010-11-04 | $80.00 | $56.73 | 14 |
| 2010-11-03 | $84.43 | $65.64 | 14 |
| 2010-11-02 | $85.15 | $64.86 | 42 |
| 2010-11-01 | $85.15 | $61.71 | 28 |
| 2010-10-31 | $85.47 | $58.29 | 14 |
| 2010-10-30 | $85.73 | $58.65 | 26 |
| 2010-10-29 | $85.86 | $56.16 | 46 |
| 2010-10-27 | $88.33 | $56.59 | 41 |
| 2010-10-26 | $89.06 | $59.54 | 41 |
| 2010-10-25 | $89.06 | $65.67 | 41 |
| 2010-10-24 | $89.06 | $56.11 | 34 |
| 2010-10-23 | $89.06 | $65.73 | 41 |
| 2010-10-21 | $96.13 | $67.61 | 29 |
| 2010-10-20 | $96.13 | $67.04 | 101 |
| 2010-10-19 | $96.13 | $67.43 | 13 |
| 2010-10-18 | $96.13 | $66.66 | 62 |
| 2010-10-17 | $96.13 | $67.71 | 15 |
| 2010-10-16 | $96.13 | $66.08 | 15 |
| 2010-10-14 | $96.13 | $66.49 | 31 |
| 2010-10-13 | $96.13 | $67.10 | 68 |
| 2010-10-12 | $96.13 | $70.50 | 16 |
| 2010-10-11 | $96.13 | $71.71 | 16 |
| 2010-10-09 | $96.13 | $67.32 | 32 |
| 2010-10-08 | $96.13 | $68.21 | 15 |
| 2010-10-06 | $96.13 | $68.18 | 15 |
| 2010-10-05 | $96.13 | $65.98 | 32 |
| 2010-10-04 | $96.13 | $66.59 | 32 |
| 2010-10-03 | $96.13 | $66.49 | 16 |
| 2010-10-01 | $96.13 | $67.46 | 52 |
| 2010-09-29 | $96.13 | $71.27 | 16 |
| 2010-09-28 | $96.13 | $73.11 | 16 |
| 2010-09-27 | $96.20 | $67.33 | 68 |
| 2010-09-26 | $96.20 | $69.14 | 16 |
| 2010-09-24 | $96.07 | $73.12 | 32 |
| 2010-09-23 | $95.94 | $73.82 | 46 |
| 2010-09-22 | $95.81 | $71.86 | 16 |
| 2010-09-21 | $95.87 | $70.88 | 15 |
| 2010-09-20 | $95.68 | $68.09 | 104 |
| 2010-09-19 | $95.48 | $72.66 | 16 |
| 2010-09-17 | $95.74 | $71.05 | 30 |
| 2010-09-16 | $96.20 | $70.15 | 60 |
| 2010-09-15 | $119.63 | $68.52 | 30 |
| 2010-09-14 | $119.63 | $68.87 | 30 |
| 2010-09-13 | $119.63 | $70.58 | 15 |
| 2010-09-12 | $119.63 | $69.68 | 15 |
| 2010-09-11 | $119.63 | $66.51 | 15 |
| 2010-09-10 | $119.63 | $69.23 | 106 |
| 2010-09-09 | $119.63 | $71.36 | 105 |
| 2010-09-07 | $119.63 | $73.67 | 34 |
| 2010-09-06 | $119.63 | $71.08 | 35 |
| 2010-09-04 | $119.63 | $74.45 | 51 |
| 2010-09-03 | $119.63 | $73.94 | 17 |
| 2010-09-02 | $119.63 | $74.04 | 34 |
| 2010-09-01 | $119.63 | $73.57 | 105 |
| 2010-08-31 | $119.63 | $75.35 | 34 |
| 2010-08-30 | $119.63 | $73.52 | 65 |
| 2010-08-29 | $119.63 | $74.43 | 17 |
| 2010-08-28 | $119.63 | $72.23 | 33 |
| 2010-08-27 | $119.63 | $75.75 | 68 |
| 2010-08-26 | $119.63 | $72.52 | 84 |
| 2010-08-25 | $119.63 | $74.04 | 33 |
| 2010-08-24 | $119.63 | $74.51 | 103 |
| 2010-08-23 | $119.63 | $75.58 | 15 |
| 2010-08-22 | $119.63 | $75.32 | 16 |
| 2010-08-21 | $119.63 | $73.50 | 53 |
| 2010-08-19 | $99.80 | $75.63 | 54 |
| 2010-08-18 | $103.21 | $75.22 | 34 |
| 2010-08-17 | $102.94 | $74.80 | 17 |
| 2010-08-15 | $95.01 | $74.98 | 17 |
| 2010-08-13 | $95.01 | $74.99 | 17 |
| 2010-08-12 | $95.01 | $75.26 | 17 |
| 2010-08-11 | $95.01 | $74.24 | 34 |
| 2010-08-08 | $89.53 | $75.28 | 17 |
| 2010-08-07 | $114.16 | $76.52 | 34 |
| 2010-08-06 | $114.16 | $76.15 | 17 |
| 2010-08-05 | $114.16 | $74.76 | 17 |
| 2010-08-04 | $114.16 | $74.85 | 17 |
| 2010-08-03 | $89.30 | $71.41 | 30 |
| 2010-08-02 | $89.30 | $71.42 | 30 |
| 2010-08-01 | $114.16 | $71.72 | 15 |
| 2010-07-30 | $114.16 | $70.96 | 99 |
| 2010-07-29 | $114.16 | $70.79 | 116 |
| 2010-07-27 | $114.16 | $70.17 | 151 |
| 2010-07-26 | $114.16 | $71.20 | 31 |
| 2010-07-25 | $114.16 | $68.42 | 77 |
| 2010-07-24 | $114.16 | $65.63 | 69 |
| 2010-07-23 | $114.16 | $67.22 | 137 |
| 2010-07-22 | $114.16 | $70.36 | 18 |
| 2010-07-19 | $114.16 | $70.57 | 18 |
| 2010-07-15 | $114.16 | $69.95 | 18 |
| 2010-07-12 | $114.16 | $67.16 | 18 |
| 2010-07-11 | $114.16 | $68.10 | 51 |
| 2010-07-08 | $114.16 | $68.84 | 18 |
| 2010-07-06 | $114.16 | $69.81 | 17 |
| 2010-07-01 | $114.16 | $70.26 | 34 |
| 2010-06-30 | $114.16 | $70.67 | 18 |
| 2010-06-29 | $114.16 | $65.92 | 73 |
| 2010-06-28 | $114.17 | $64.60 | 74 |
| 2010-06-26 | $114.17 | $69.38 | 36 |
| 2010-06-25 | $114.17 | $68.63 | 18 |
| 2010-06-22 | $114.17 | $65.41 | 148 |
| 2010-06-21 | $114.17 | $65.11 | 75 |
| 2010-06-20 | $114.17 | $64.91 | 18 |
| 2010-06-19 | $114.17 | $65.55 | 91 |
| 2010-06-18 | $114.17 | $68.96 | 18 |
| 2010-06-17 | $114.17 | $65.39 | 75 |
| 2010-06-16 | $114.17 | $71.85 | 17 |
| 2010-06-15 | $114.17 | $69.62 | 18 |
| 2010-06-12 | $114.17 | $70.73 | 18 |
| 2010-06-11 | $114.17 | $71.05 | 35 |
| 2010-06-10 | $114.17 | $70.82 | 18 |
| 2010-06-09 | $114.17 | $71.33 | 18 |
| 2010-06-08 | $114.17 | $73.32 | 18 |
| 2010-06-07 | $114.17 | $73.26 | 18 |
| 2010-06-04 | $95.98 | $74.40 | 35 |
| 2010-06-03 | $95.22 | $72.22 | 18 |
| 2010-06-01 | $95.64 | $68.99 | 90 |
| 2010-05-31 | $95.17 | $69.57 | 17 |
| 2010-05-29 | $95.61 | $71.11 | 36 |
| 2010-05-28 | $95.27 | $67.27 | 56 |
| 2010-05-27 | $95.00 | $68.04 | 71 |
| 2010-05-26 | $95.00 | $69.87 | 71 |
| 2010-05-24 | $95.00 | $72.44 | 18 |
| 2010-05-21 | $95.00 | $67.51 | 155 |
| 2010-05-20 | $95.00 | $70.50 | 34 |
| 2010-05-19 | $95.00 | $70.33 | 33 |
| 2010-05-18 | $95.00 | $71.94 | 17 |
| 2010-05-17 | $95.00 | $72.30 | 51 |
| 2010-05-16 | $90.54 | $67.17 | 66 |
| 2010-05-15 | $90.54 | $63.51 | 65 |
| 2010-05-14 | $90.00 | $70.31 | 16 |
| 2010-05-13 | $90.00 | $63.75 | 51 |
| 2010-05-12 | $90.00 | $69.58 | 16 |
| 2010-05-11 | $93.86 | $67.58 | 103 |
| 2010-05-10 | $90.00 | $69.14 | 15 |
| 2010-05-08 | $90.00 | $68.49 | 32 |
| 2010-05-07 | $90.00 | $67.50 | 67 |
| 2010-05-06 | $90.00 | $69.12 | 99 |
| 2010-05-05 | $94.05 | $67.58 | 168 |
| 2010-05-04 | $94.05 | $67.51 | 45 |
| 2010-05-03 | $94.05 | $69.16 | 68 |
| 2010-05-02 | $94.05 | $66.67 | 17 |
| 2010-05-01 | $94.05 | $66.59 | 17 |
| 2010-04-30 | $94.05 | $68.26 | 16 |
| 2010-04-29 | $94.22 | $66.63 | 90 |
| 2010-04-28 | $94.22 | $68.96 | 39 |
| 2010-04-23 | $93.75 | $63.23 | 28 |
| 2010-04-22 | $93.75 | $63.66 | 55 |
| 2010-04-21 | $93.75 | $62.71 | 163 |
| 2010-04-20 | $93.75 | $64.63 | 27 |
| 2010-04-17 | $95.75 | $65.32 | 27 |
| 2010-04-12 | $89.01 | $67.89 | 57 |
| 2010-04-10 | $91.25 | $68.33 | 27 |
| 2010-04-08 | $96.45 | $71.99 | 26 |
| 2010-04-06 | $90.87 | $67.96 | 26 |
| 2010-04-05 | $91.06 | $71.55 | 25 |
| 2010-03-28 | $96.20 | $71.96 | 29 |
| 2010-03-26 | $91.20 | $72.54 | 29 |
| 2010-03-22 | $96.71 | $71.19 | 29 |
| 2010-03-21 | $96.71 | $70.52 | 28 |
| 2010-03-17 | $96.72 | $72.93 | 25 |
| 2010-03-15 | $96.84 | $73.92 | 53 |
| 2010-03-12 | $96.82 | $70.81 | 26 |
| 2010-03-11 | $96.60 | $72.69 | 25 |
| 2010-03-09 | $96.74 | $70.65 | 27 |
| 2010-03-06 | $96.78 | $73.35 | 25 |
| 2010-02-24 | $100.33 | $74.91 | 28 |
| 2010-02-23 | $100.25 | $76.73 | 28 |
| 2010-02-22 | $100.25 | $76.58 | 28 |
| 2010-02-20 | $100.25 | $75.04 | 28 |
| 2010-02-17 | $100.25 | $75.64 | 28 |
| 2010-02-14 | $100.25 | $75.69 | 28 |
| 2010-02-12 | $100.25 | $75.58 | 78 |
| 2010-02-11 | $92.67 | $73.27 | 52 |
| 2010-02-10 | $100.25 | $73.17 | 26 |
| 2010-02-09 | $100.25 | $72.92 | 53 |
| 2010-02-08 | $109.64 | $71.98 | 129 |
| 2010-02-05 | $109.64 | $75.76 | 81 |
| 2010-02-04 | $109.64 | $76.36 | 255 |
| 2010-02-02 | $96.57 | $74.48 | 27 |
| 2010-02-01 | $96.57 | $73.85 | 27 |
| 2010-01-31 | $96.57 | $72.69 | 109 |
| 2010-01-23 | $92.46 | $75.58 | 108 |
| 2010-01-21 | $92.46 | $74.80 | 26 |
| 2010-01-20 | $92.46 | $74.01 | 26 |
| 2010-01-19 | $92.46 | $73.59 | 27 |
| 2010-01-16 | $91.61 | $73.59 | 28 |
| 2010-01-15 | $96.74 | $73.83 | 80 |
| 2010-01-13 | $99.70 | $75.12 | 27 |
| 2010-01-11 | $91.52 | $73.35 | 106 |
| 2010-01-10 | $97.48 | $74.03 | 52 |
| 2010-01-07 | $99.45 | $75.62 | 27 |
| 2010-01-05 | $93.95 | $75.47 | 55 |
| 2010-01-04 | $88.11 | $72.78 | 53 |
| 2010-01-03 | $88.21 | $70.83 | 110 |
| 2009-12-31 | $87.56 | $69.50 | 56 |
| 2009-12-25 | $88.64 | $67.59 | 56 |
| 2009-12-23 | $88.64 | $67.01 | 81 |
| 2009-12-22 | $88.64 | $67.69 | 27 |
| 2009-12-21 | $88.47 | $66.38 | 83 |
| 2009-12-20 | $88.47 | $65.55 | 27 |
| 2009-12-19 | $88.47 | $66.20 | 60 |
| 2009-12-18 | $84.42 | $64.41 | 27 |
| 2009-12-17 | $88.69 | $65.32 | 139 |
| 2009-12-16 | $88.69 | $65.42 | 54 |
| 2009-12-15 | $84.48 | $65.01 | 27 |
| 2009-12-13 | $84.61 | $64.76 | 27 |
| 2009-12-12 | $84.51 | $64.07 | 29 |
| 2009-12-11 | $84.56 | $63.48 | 29 |
| 2009-12-05 | $93.71 | $65.80 | 34 |
| 2009-12-01 | $103.46 | $65.39 | 33 |
| 2009-11-30 | $103.46 | $65.13 | 67 |
| 2009-11-29 | $103.46 | $63.92 | 33 |
| 2009-11-23 | $103.46 | $65.55 | 32 |
| 2009-11-17 | $103.10 | $67.46 | 63 |
| 2009-11-16 | $100.09 | $66.67 | 31 |
| 2009-11-14 | $100.24 | $69.24 | 30 |
| 2009-11-11 | $95.60 | $69.45 | 30 |
| 2009-11-08 | $103.10 | $66.99 | 32 |
| 2009-11-06 | $100.53 | $66.88 | 126 |
| 2009-11-05 | $92.64 | $66.31 | 32 |
| 2009-11-04 | $92.64 | $66.28 | 32 |
| 2009-10-25 | $93.80 | $66.84 | 30 |
| 2009-10-17 | $93.80 | $70.63 | 57 |
| 2009-10-15 | $93.80 | $72.48 | 28 |
| 2009-10-13 | $93.80 | $72.93 | 27 |
| 2009-10-12 | $93.80 | $72.29 | 29 |
| 2009-10-07 | $87.11 | $73.38 | 29 |
| 2009-10-06 | $87.11 | $73.10 | 29 |
| 2009-09-30 | $87.10 | $72.19 | 28 |
| 2009-09-29 | $87.10 | $71.62 | 28 |
| 2009-09-28 | $87.10 | $73.43 | 55 |
| 2009-09-27 | $87.10 | $72.51 | 26 |
| 2009-09-23 | $87.10 | $70.74 | 87 |
| 2009-09-22 | $87.10 | $70.51 | 29 |
| 2009-09-01 | $112.95 | $77.78 | 31 |
| 2009-08-29 | $109.20 | $77.42 | 30 |
| 2009-08-26 | $91.12 | $75.36 | 61 |
| 2009-08-25 | $95.20 | $77.13 | 30 |
| 2009-08-24 | $96.95 | $77.46 | 30 |
| 2009-08-13 | $94.95 | $70.98 | 30 |
| 2009-08-12 | $92.70 | $71.37 | 31 |
| 2009-08-10 | $93.95 | $72.32 | 29 |
| 2009-08-05 | $88.41 | $71.58 | 30 |
| 2009-08-03 | $88.41 | $70.65 | 82 |
| 2009-08-02 | $88.41 | $67.98 | 31 |
| 2009-07-25 | $88.41 | $66.25 | 31 |
| 2009-07-22 | $88.41 | $65.84 | 62 |
| 2009-07-21 | $88.41 | $66.54 | 31 |
| 2009-07-20 | $88.41 | $64.24 | 31 |
| 2009-07-17 | $88.55 | $64.78 | 31 |
| 2009-07-15 | $88.55 | $65.01 | 31 |
| 2009-07-14 | $88.55 | $65.31 | 31 |
| 2009-07-13 | $88.55 | $64.96 | 90 |
| 2009-07-12 | $88.55 | $65.72 | 31 |
| 2009-07-10 | $88.55 | $63.93 | 58 |
| 2009-07-06 | $88.41 | $62.85 | 29 |
| 2009-07-05 | $88.41 | $62.64 | 29 |
| 2009-07-04 | $88.41 | $63.33 | 29 |
| 2009-07-01 | $88.41 | $63.73 | 30 |
| 2009-06-26 | $90.13 | $62.06 | 30 |
| 2009-06-19 | $90.13 | $63.13 | 31 |
| 2009-06-15 | $90.13 | $63.63 | 31 |
| 2009-06-11 | $90.13 | $63.49 | 31 |
| 2009-06-09 | $90.13 | $64.03 | 59 |
| 2009-06-08 | $90.13 | $63.94 | 30 |
| 2009-05-30 | $102.00 | $67.06 | 29 |
| 2009-05-26 | $99.25 | $67.97 | 28 |
| 2009-05-23 | $102.00 | $66.87 | 59 |
| 2009-05-22 | $102.00 | $68.59 | 30 |
| 2009-05-20 | $87.42 | $66.71 | 29 |
| 2009-05-18 | $87.30 | $66.82 | 87 |
| 2009-05-13 | $87.30 | $67.62 | 30 |
| 2009-05-09 | $89.25 | $66.26 | 30 |
| 2009-05-08 | $89.25 | $66.45 | 30 |
| 2009-05-03 | $84.07 | $63.52 | 31 |
| 2009-04-13 | $89.90 | $67.74 | 89 |
| 2009-04-10 | $89.90 | $69.96 | 30 |
| 2009-03-21 | $89.90 | $68.17 | 28 |
| 2009-03-19 | $89.90 | $68.52 | 28 |
| 2009-03-17 | $90.16 | $68.00 | 58 |
| 2009-03-04 | $90.16 | $68.88 | 32 |
| 2009-02-24 | $90.16 | $68.13 | 31 |
| 2009-01-01 | $89.59 | $67.66 | 23 |
| 2008-12-30 | $89.59 | $67.80 | 22 |