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| Date | Max Price | Avg Price | # Prices |
|---|---|---|---|
| 2012-02-04 | $12.40 | $7.25 | 12 |
| 2012-02-03 | $12.40 | $7.42 | 26 |
| 2012-02-02 | $10.89 | $6.96 | 12 |
| 2012-02-01 | $11.00 | $7.08 | 18 |
| 2012-01-31 | $11.45 | $8.13 | 7 |
| 2012-01-30 | $11.16 | $6.91 | 18 |
| 2012-01-29 | $11.16 | $7.20 | 64 |
| 2012-01-28 | $12.39 | $7.19 | 18 |
| 2012-01-27 | $12.39 | $7.39 | 27 |
| 2012-01-26 | $13.20 | $7.26 | 48 |
| 2012-01-25 | $9.68 | $5.77 | 38 |
| 2012-01-24 | $9.44 | $5.06 | 17 |
| 2012-01-23 | $9.34 | $5.56 | 18 |
| 2012-01-22 | $9.30 | $6.25 | 15 |
| 2012-01-21 | $10.58 | $6.63 | 45 |
| 2012-01-20 | $10.66 | $6.33 | 7 |
| 2012-01-19 | $11.78 | $6.42 | 58 |
| 2012-01-18 | $12.59 | $7.52 | 44 |
| 2012-01-17 | $13.83 | $6.01 | 16 |
| 2012-01-16 | $10.54 | $6.34 | 26 |
| 2012-01-15 | $8.25 | $4.92 | 49 |
| 2012-01-14 | $9.24 | $5.54 | 6 |
| 2012-01-13 | $12.50 | $6.85 | 26 |
| 2012-01-12 | $9.90 | $5.08 | 9 |
| 2012-01-11 | $12.77 | $5.96 | 63 |
| 2012-01-10 | $10.41 | $5.78 | 34 |
| 2012-01-09 | $7.25 | $4.75 | 15 |
| 2012-01-07 | $3.49 | $2.29 | 14 |
| 2012-01-05 | $3.61 | $2.18 | 3 |
| 2012-01-04 | $5.97 | $2.56 | 21 |
| 2012-01-03 | $5.77 | $2.29 | 15 |
| 2012-01-02 | $4.59 | $2.50 | 16 |
| 2011-12-31 | $4.60 | $2.13 | 36 |
| 2011-12-30 | $3.78 | $1.85 | 6 |
| 2011-12-29 | $3.30 | $1.97 | 8 |
| 2011-12-28 | $4.23 | $2.02 | 18 |
| 2011-12-27 | $3.08 | $2.19 | 6 |
| 2011-12-26 | $3.19 | $2.02 | 12 |
| 2011-12-23 | $3.45 | $2.19 | 20 |
| 2011-12-22 | $4.34 | $2.40 | 3 |
| 2011-12-21 | $3.68 | $1.91 | 12 |
| 2011-12-20 | $2.74 | $2.14 | 15 |
| 2011-12-19 | $3.19 | $2.08 | 19 |
| 2011-12-18 | $2.30 | $1.91 | 5 |
| 2011-12-17 | $2.00 | $1.82 | 3 |
| 2011-12-15 | $3.54 | $2.53 | 46 |
| 2011-12-14 | $3.82 | $3.08 | 81 |
| 2011-12-13 | $3.82 | $3.24 | 14 |
| 2011-12-12 | $3.50 | $2.96 | 16 |
| 2011-12-09 | $4.78 | $3.29 | 5 |
| 2011-12-08 | $7.23 | $3.75 | 21 |
| 2011-12-07 | $8.25 | $3.59 | 34 |
| 2011-12-06 | $8.25 | $3.42 | 35 |
| 2011-12-05 | $4.26 | $3.12 | 8 |
| 2011-12-03 | $4.26 | $2.83 | 3 |
| 2011-12-02 | $16.00 | $4.59 | 16 |
| 2011-11-30 | $16.00 | $5.42 | 6 |
| 2011-11-29 | $16.00 | $5.51 | 21 |
| 2011-11-28 | $16.00 | $4.35 | 9 |
| 2011-11-23 | $8.83 | $4.86 | 12 |
| 2011-11-20 | $6.00 | $3.41 | 11 |
| 2011-11-18 | $6.95 | $5.07 | 5 |
| 2011-11-13 | $8.51 | $4.80 | 39 |
| 2011-11-10 | $8.69 | $5.37 | 17 |
| 2011-11-08 | $8.77 | $5.33 | 15 |
| 2011-11-04 | $9.68 | $5.31 | 20 |
| 2011-11-01 | $8.36 | $5.14 | 20 |
| 2011-10-31 | $8.29 | $5.15 | 9 |
| 2011-10-30 | $8.48 | $4.76 | 10 |
| 2011-10-27 | $9.66 | $5.36 | 67 |
| 2011-10-24 | $6.86 | $3.81 | 28 |
| 2011-10-23 | $7.65 | $4.30 | 36 |
| 2011-10-21 | $6.62 | $4.01 | 10 |
| 2011-10-19 | $10.77 | $4.97 | 12 |
| 2011-10-17 | $6.63 | $3.28 | 12 |
| 2011-10-16 | $7.54 | $3.82 | 84 |
| 2011-10-15 | $6.63 | $3.58 | 12 |
| 2011-10-13 | $8.01 | $4.11 | 21 |
| 2011-10-10 | $7.91 | $3.78 | 64 |
| 2011-10-08 | $6.50 | $3.70 | 10 |
| 2011-10-07 | $7.32 | $3.68 | 18 |
| 2011-10-06 | $6.04 | $2.71 | 25 |
| 2011-09-29 | $6.04 | $2.54 | 37 |
| 2011-09-28 | $6.04 | $2.65 | 7 |
| 2011-09-27 | $7.74 | $3.06 | 19 |
| 2011-09-26 | $7.74 | $3.84 | 9 |
| 2011-09-24 | $7.74 | $3.94 | 10 |
| 2011-09-19 | $14.40 | $5.30 | 39 |
| 2011-09-14 | $9.25 | $5.97 | 13 |
| 2011-09-12 | $12.50 | $7.12 | 39 |
| 2011-09-11 | $12.50 | $7.15 | 13 |
| 2011-09-10 | $12.50 | $7.36 | 13 |
| 2011-09-09 | $12.50 | $7.36 | 13 |
| 2011-09-06 | $15.81 | $7.39 | 72 |
| 2011-09-02 | $11.97 | $7.97 | 13 |
| 2011-09-01 | $11.97 | $8.05 | 24 |
| 2011-08-24 | $17.32 | $11.00 | 23 |
| 2011-08-21 | $15.94 | $11.40 | 55 |
| 2011-08-19 | $15.94 | $12.11 | 11 |
| 2011-08-18 | $16.22 | $11.67 | 31 |
| 2011-08-17 | $15.94 | $10.38 | 22 |
| 2011-08-16 | $18.60 | $12.47 | 85 |
| 2011-08-15 | $18.36 | $12.83 | 24 |
| 2011-08-14 | $16.23 | $11.72 | 12 |
| 2011-08-12 | $15.94 | $11.55 | 12 |
| 2011-08-10 | $19.65 | $14.45 | 11 |
| 2011-08-09 | $19.65 | $13.90 | 10 |
| 2011-08-08 | $19.65 | $12.30 | 10 |
| 2011-08-07 | $19.65 | $13.00 | 11 |
| 2011-08-05 | $19.65 | $12.48 | 52 |
| 2011-08-02 | $19.65 | $13.23 | 44 |
| 2011-07-29 | $19.17 | $14.14 | 11 |
| 2011-07-28 | $15.50 | $13.58 | 9 |
| 2011-07-27 | $22.96 | $14.07 | 78 |
| 2011-07-26 | $20.71 | $13.67 | 27 |
| 2011-07-25 | $1780.00 | $117.96 | 51 |
| 2011-07-24 | $1780.00 | $174.73 | 11 |
| 2011-07-23 | $24.12 | $14.34 | 50 |
| 2011-07-22 | $21.28 | $13.84 | 18 |
| 2011-07-19 | $26.99 | $16.29 | 34 |
| 2011-07-15 | $26.99 | $16.87 | 9 |
| 2011-07-11 | $30.15 | $19.08 | 27 |
| 2011-07-10 | $28.75 | $19.30 | 13 |
| 2011-07-09 | $29.25 | $17.64 | 11 |
| 2011-07-07 | $28.79 | $20.45 | 11 |
| 2011-07-06 | $29.25 | $20.04 | 50 |
| 2011-07-04 | $33.36 | $21.47 | 43 |
| 2011-07-02 | $33.70 | $24.25 | 13 |
| 2011-07-01 | $33.02 | $20.85 | 44 |
| 2011-06-30 | $29.59 | $20.13 | 29 |
| 2011-06-29 | $67.31 | $23.07 | 58 |
| 2011-06-28 | $67.31 | $23.43 | 16 |
| 2011-06-27 | $67.31 | $21.78 | 30 |
| 2011-06-26 | $67.31 | $22.45 | 61 |
| 2011-06-25 | $67.31 | $22.08 | 28 |
| 2011-06-24 | $67.31 | $24.54 | 33 |
| 2011-06-23 | $67.31 | $25.26 | 124 |
| 2011-06-22 | $67.31 | $25.54 | 51 |
| 2011-06-21 | $67.31 | $24.13 | 133 |
| 2011-06-20 | $67.31 | $24.26 | 155 |
| 2011-06-19 | $67.31 | $22.99 | 91 |
| 2011-06-18 | $67.31 | $22.23 | 74 |
| 2011-06-17 | $67.31 | $20.87 | 26 |
| 2011-06-16 | $67.31 | $23.26 | 44 |
| 2011-06-15 | $67.31 | $22.84 | 55 |
| 2011-06-14 | $67.31 | $23.13 | 42 |
| 2011-06-13 | $67.31 | $21.15 | 130 |
| 2011-06-12 | $67.31 | $22.09 | 12 |
| 2011-06-11 | $67.31 | $22.70 | 49 |
| 2011-06-10 | $67.31 | $21.66 | 75 |
| 2011-06-09 | $67.31 | $21.20 | 141 |
| 2011-06-08 | $67.31 | $23.69 | 82 |
| 2011-06-07 | $67.31 | $25.21 | 71 |
| 2011-06-06 | $67.31 | $27.47 | 42 |
| 2011-06-05 | $67.31 | $26.14 | 81 |
| 2011-06-04 | $67.31 | $27.72 | 42 |
| 2011-06-03 | $67.31 | $27.44 | 52 |
| 2011-06-02 | $67.31 | $25.60 | 27 |
| 2011-06-01 | $67.31 | $23.77 | 147 |
| 2011-05-31 | $67.31 | $25.03 | 57 |
| 2011-05-30 | $47.12 | $21.09 | 55 |
| 2011-05-29 | $67.31 | $22.74 | 29 |
| 2011-05-28 | $67.31 | $21.47 | 55 |
| 2011-05-27 | $67.31 | $23.54 | 145 |
| 2011-05-26 | $67.31 | $19.46 | 43 |
| 2011-05-25 | $63.00 | $22.32 | 13 |
| 2011-05-24 | $63.00 | $19.87 | 88 |
| 2011-05-23 | $31.32 | $15.76 | 12 |
| 2011-05-22 | $31.32 | $16.41 | 26 |
| 2011-05-21 | $31.32 | $16.86 | 47 |
| 2011-05-20 | $31.32 | $18.18 | 36 |
| 2011-05-19 | $31.32 | $19.65 | 62 |
| 2011-05-18 | $31.32 | $21.04 | 42 |
| 2011-05-17 | $36.22 | $21.38 | 74 |
| 2011-05-16 | $36.22 | $20.67 | 22 |
| 2011-05-15 | $36.22 | $18.69 | 85 |
| 2011-05-14 | $36.22 | $21.54 | 38 |
| 2011-05-13 | $36.22 | $21.18 | 15 |
| 2011-05-12 | $36.22 | $21.25 | 48 |
| 2011-05-11 | $36.22 | $20.61 | 129 |
| 2011-05-10 | $41.14 | $24.29 | 45 |
| 2011-05-09 | $43.31 | $25.18 | 90 |
| 2011-05-08 | $41.87 | $26.46 | 32 |
| 2011-05-07 | $41.87 | $26.09 | 31 |
| 2011-05-06 | $45.00 | $26.43 | 16 |
| 2011-05-05 | $45.00 | $23.19 | 276 |
| 2011-05-04 | $36.22 | $22.47 | 269 |
| 2011-05-03 | $36.22 | $19.98 | 46 |
| 2011-05-02 | $36.22 | $22.43 | 36 |
| 2011-05-01 | $37.54 | $22.46 | 47 |
| 2011-04-30 | $44.98 | $25.27 | 14 |
| 2011-04-29 | $42.57 | $23.40 | 13 |
| 2011-04-28 | $54.50 | $26.01 | 95 |
| 2011-04-27 | $54.50 | $28.92 | 29 |
| 2011-04-26 | $54.50 | $28.91 | 38 |
| 2011-04-25 | $54.50 | $20.84 | 63 |
| 2011-04-24 | $47.98 | $21.77 | 43 |
| 2011-04-23 | $49.25 | $25.38 | 29 |
| 2011-04-22 | $50.05 | $25.20 | 56 |
| 2011-04-21 | $50.10 | $26.70 | 29 |
| 2011-04-20 | $51.75 | $26.50 | 14 |
| 2011-04-19 | $52.99 | $22.82 | 29 |
| 2011-04-18 | $57.32 | $26.14 | 99 |
| 2011-04-17 | $57.32 | $25.25 | 30 |
| 2011-04-16 | $57.32 | $25.60 | 60 |
| 2011-04-15 | $61.69 | $28.12 | 16 |
| 2011-04-14 | $61.69 | $29.27 | 44 |
| 2011-04-13 | $61.69 | $31.92 | 44 |
| 2011-04-12 | $61.69 | $30.41 | 16 |
| 2011-04-11 | $61.69 | $29.57 | 60 |
| 2011-04-10 | $61.69 | $32.30 | 14 |
| 2011-04-09 | $61.69 | $32.33 | 27 |
| 2011-04-08 | $61.69 | $33.68 | 14 |
| 2011-04-07 | $65.10 | $37.51 | 13 |
| 2011-04-06 | $61.69 | $38.39 | 40 |
| 2011-04-04 | $83.73 | $38.25 | 68 |
| 2011-04-03 | $79.65 | $39.39 | 27 |
| 2011-03-31 | $84.49 | $38.64 | 30 |
| 2011-03-30 | $78.42 | $38.49 | 27 |
| 2011-03-29 | $78.73 | $42.07 | 42 |
| 2011-03-28 | $58.64 | $34.58 | 30 |
| 2011-03-27 | $55.47 | $30.88 | 14 |
| 2011-03-26 | $56.93 | $32.83 | 15 |
| 2011-03-24 | $75.14 | $34.89 | 16 |
| 2011-03-23 | $57.95 | $31.76 | 15 |
| 2011-03-22 | $74.47 | $33.18 | 45 |
| 2011-03-19 | $58.29 | $28.75 | 32 |
| 2011-03-18 | $60.03 | $29.17 | 32 |
| 2011-03-17 | $63.72 | $29.24 | 80 |
| 2011-03-15 | $56.65 | $27.72 | 74 |
| 2011-03-14 | $55.47 | $27.93 | 125 |
| 2011-03-13 | $55.47 | $28.69 | 30 |
| 2011-03-12 | $64.67 | $30.25 | 29 |
| 2011-03-11 | $65.68 | $33.16 | 14 |
| 2011-03-10 | $62.05 | $30.86 | 14 |
| 2011-03-09 | $65.66 | $32.41 | 15 |
| 2011-03-07 | $55.47 | $31.44 | 15 |
| 2011-03-06 | $68.62 | $36.30 | 27 |
| 2011-03-04 | $66.63 | $34.35 | 30 |
| 2011-03-03 | $65.99 | $33.22 | 29 |
| 2011-02-28 | $68.13 | $35.74 | 79 |
| 2011-02-24 | $75.93 | $34.33 | 64 |
| 2011-02-23 | $73.98 | $31.83 | 16 |
| 2011-02-22 | $68.76 | $32.39 | 32 |
| 2011-02-21 | $71.74 | $33.22 | 97 |
| 2011-02-17 | $61.70 | $29.21 | 32 |
| 2011-02-16 | $70.96 | $34.17 | 34 |
| 2011-02-15 | $71.00 | $35.86 | 16 |
| 2011-02-14 | $65.55 | $32.62 | 17 |
| 2011-02-13 | $65.54 | $33.41 | 33 |
| 2011-02-12 | $67.45 | $30.61 | 51 |
| 2011-02-11 | $59.25 | $30.33 | 17 |
| 2011-02-10 | $67.99 | $30.60 | 17 |
| 2011-02-09 | $73.13 | $31.27 | 51 |
| 2011-02-08 | $75.89 | $32.23 | 16 |
| 2011-02-05 | $73.82 | $33.34 | 17 |
| 2011-02-04 | $76.03 | $34.19 | 51 |
| 2011-02-03 | $86.77 | $36.66 | 40 |
| 2011-02-02 | $86.77 | $38.09 | 32 |
| 2011-02-01 | $86.77 | $37.01 | 45 |
| 2011-01-30 | $86.77 | $34.19 | 66 |
| 2011-01-29 | $86.77 | $36.33 | 59 |
| 2011-01-28 | $84.39 | $38.03 | 64 |
| 2011-01-22 | $81.93 | $34.63 | 58 |
| 2011-01-20 | $100.79 | $44.22 | 14 |
| 2011-01-19 | $93.60 | $38.28 | 27 |
| 2011-01-18 | $86.72 | $42.08 | 14 |
| 2011-01-17 | $78.50 | $38.81 | 14 |
| 2011-01-16 | $84.60 | $37.30 | 50 |
| 2011-01-15 | $70.54 | $40.30 | 12 |
| 2011-01-14 | $72.43 | $43.79 | 14 |
| 2011-01-12 | $92.48 | $46.46 | 15 |
| 2011-01-11 | $86.98 | $43.69 | 32 |
| 2011-01-10 | $88.03 | $45.35 | 136 |
| 2011-01-07 | $86.40 | $42.35 | 42 |
| 2011-01-06 | $89.77 | $47.94 | 13 |
| 2011-01-04 | $41.32 | $34.88 | 3 |
| 2011-01-03 | $80.26 | $40.27 | 16 |
| 2011-01-01 | $75.18 | $37.65 | 15 |
| 2010-12-27 | $59.20 | $33.32 | 34 |
| 2010-12-26 | $59.20 | $33.16 | 18 |
| 2010-12-24 | $59.19 | $33.40 | 53 |
| 2010-12-23 | $57.25 | $32.10 | 49 |
| 2010-12-21 | $57.25 | $32.99 | 33 |
| 2010-12-20 | $57.25 | $33.21 | 16 |
| 2010-12-19 | $57.25 | $31.11 | 32 |
| 2010-12-18 | $57.25 | $29.61 | 66 |
| 2010-12-17 | $57.25 | $32.90 | 62 |
| 2010-12-15 | $57.25 | $33.67 | 16 |
| 2010-12-14 | $57.25 | $32.93 | 96 |
| 2010-12-13 | $57.25 | $34.37 | 103 |
| 2010-12-12 | $57.77 | $36.84 | 15 |
| 2010-12-11 | $57.35 | $36.34 | 30 |
| 2010-12-10 | $57.25 | $33.25 | 45 |
| 2010-12-09 | $57.25 | $31.48 | 174 |
| 2010-12-08 | $78.62 | $36.11 | 120 |
| 2010-12-07 | $75.84 | $40.05 | 44 |
| 2010-12-06 | $77.32 | $41.05 | 15 |
| 2010-12-05 | $78.08 | $40.95 | 60 |
| 2010-12-04 | $78.08 | $41.06 | 43 |
| 2010-12-03 | $78.67 | $39.19 | 83 |
| 2010-12-02 | $78.67 | $45.39 | 88 |
| 2010-12-01 | $67.99 | $42.61 | 55 |
| 2010-11-29 | $71.73 | $41.28 | 41 |
| 2010-11-28 | $78.19 | $45.81 | 14 |
| 2010-11-27 | $78.19 | $42.57 | 48 |
| 2010-11-26 | $78.19 | $44.60 | 14 |
| 2010-11-25 | $78.19 | $47.87 | 56 |
| 2010-11-24 | $78.19 | $45.17 | 73 |
| 2010-11-23 | $78.19 | $51.71 | 70 |
| 2010-11-22 | $78.19 | $56.07 | 78 |
| 2010-11-21 | $78.19 | $56.50 | 65 |
| 2010-11-20 | $78.19 | $55.83 | 52 |
| 2010-11-19 | $78.19 | $54.74 | 107 |
| 2010-11-18 | $78.19 | $51.65 | 60 |
| 2010-11-17 | $78.19 | $55.43 | 11 |
| 2010-11-16 | $78.22 | $52.37 | 72 |
| 2010-11-15 | $78.22 | $51.60 | 13 |
| 2010-11-14 | $78.22 | $52.04 | 37 |
| 2010-11-13 | $35.08 | $35.08 | 1 |
| 2010-11-12 | $78.22 | $52.35 | 144 |
| 2010-11-11 | $78.19 | $52.97 | 72 |
| 2010-11-10 | $78.19 | $55.94 | 13 |
| 2010-11-09 | $78.19 | $56.43 | 13 |
| 2010-11-08 | $78.19 | $54.72 | 59 |
| 2010-11-07 | $78.19 | $59.38 | 26 |
| 2010-11-06 | $78.19 | $58.45 | 52 |
| 2010-11-05 | $78.19 | $54.89 | 102 |
| 2010-11-04 | $78.19 | $54.08 | 71 |
| 2010-11-03 | $71.69 | $53.58 | 57 |
| 2010-11-02 | $78.19 | $55.53 | 59 |
| 2010-11-01 | $78.19 | $58.94 | 26 |
| 2010-10-31 | $72.06 | $55.85 | 26 |
| 2010-10-30 | $72.06 | $55.54 | 13 |
| 2010-10-29 | $79.95 | $54.22 | 140 |
| 2010-10-28 | $92.41 | $58.27 | 13 |
| 2010-10-27 | $92.41 | $58.65 | 22 |
| 2010-10-26 | $92.41 | $57.65 | 37 |
| 2010-10-25 | $92.41 | $54.73 | 171 |
| 2010-10-24 | $92.41 | $56.51 | 13 |
| 2010-10-20 | $101.64 | $65.12 | 54 |
| 2010-10-18 | $101.64 | $65.02 | 13 |
| 2010-10-17 | $101.64 | $63.32 | 28 |
| 2010-10-16 | $101.64 | $62.20 | 169 |
| 2010-10-13 | $92.40 | $64.06 | 50 |
| 2010-10-12 | $101.64 | $66.97 | 15 |
| 2010-10-11 | $101.64 | $67.54 | 45 |
| 2010-10-08 | $101.64 | $64.29 | 67 |
| 2010-10-07 | $101.64 | $61.44 | 97 |
| 2010-10-01 | $101.64 | $68.10 | 30 |
| 2010-09-30 | $101.64 | $67.93 | 15 |
| 2010-09-29 | $101.64 | $65.06 | 59 |
| 2010-09-28 | $92.40 | $65.64 | 15 |
| 2010-09-27 | $92.40 | $62.69 | 52 |
| 2010-09-24 | $92.40 | $67.08 | 15 |
| 2010-09-21 | $92.40 | $65.46 | 29 |
| 2010-09-18 | $92.40 | $62.61 | 36 |
| 2010-09-17 | $92.40 | $67.97 | 15 |
| 2010-09-16 | $92.40 | $68.09 | 45 |
| 2010-09-15 | $112.33 | $68.98 | 15 |
| 2010-09-14 | $112.33 | $68.76 | 15 |
| 2010-09-13 | $112.33 | $68.76 | 30 |
| 2010-09-11 | $112.33 | $69.24 | 15 |
| 2010-09-10 | $112.33 | $69.92 | 45 |
| 2010-09-09 | $112.33 | $70.34 | 80 |
| 2010-09-08 | $112.33 | $71.66 | 15 |
| 2010-09-07 | $112.33 | $68.95 | 68 |
| 2010-09-06 | $112.33 | $70.96 | 64 |
| 2010-09-05 | $112.33 | $71.85 | 48 |
| 2010-09-04 | $112.33 | $71.50 | 62 |
| 2010-09-03 | $112.33 | $72.45 | 16 |
| 2010-09-01 | $112.33 | $71.36 | 16 |
| 2010-08-31 | $112.33 | $71.33 | 16 |
| 2010-08-30 | $112.33 | $70.35 | 32 |
| 2010-08-26 | $112.33 | $73.24 | 15 |
| 2010-08-25 | $112.33 | $74.30 | 63 |
| 2010-08-24 | $112.33 | $72.89 | 52 |
| 2010-08-23 | $112.33 | $74.54 | 76 |
| 2010-08-22 | $112.33 | $75.62 | 15 |
| 2010-08-19 | $112.33 | $73.97 | 32 |
| 2010-08-15 | $112.33 | $73.43 | 16 |
| 2010-08-14 | $112.33 | $74.68 | 16 |
| 2010-08-13 | $112.33 | $76.53 | 45 |
| 2010-08-12 | $112.33 | $76.34 | 32 |
| 2010-08-11 | $112.33 | $76.59 | 16 |
| 2010-08-10 | $112.33 | $75.98 | 16 |
| 2010-08-09 | $92.85 | $73.76 | 29 |
| 2010-08-08 | $112.32 | $74.42 | 51 |
| 2010-08-07 | $114.75 | $74.68 | 51 |
| 2010-08-06 | $114.75 | $75.49 | 17 |
| 2010-08-05 | $114.75 | $75.25 | 31 |
| 2010-07-31 | $114.75 | $73.73 | 14 |
| 2010-07-30 | $114.75 | $74.01 | 15 |
| 2010-07-28 | $114.75 | $76.16 | 30 |
| 2010-07-20 | $114.75 | $72.26 | 17 |
| 2010-07-17 | $114.75 | $72.49 | 17 |
| 2010-07-12 | $114.75 | $71.10 | 32 |
| 2010-07-11 | $114.75 | $72.42 | 16 |
| 2010-07-09 | $114.75 | $74.48 | 17 |
| 2010-07-08 | $114.75 | $72.50 | 67 |
| 2010-07-05 | $113.91 | $72.06 | 34 |
| 2010-07-02 | $113.64 | $72.40 | 16 |
| 2010-07-01 | $113.60 | $74.19 | 17 |
| 2010-06-30 | $113.60 | $74.62 | 85 |
| 2010-06-29 | $106.84 | $71.04 | 33 |
| 2010-06-28 | $106.85 | $70.81 | 66 |
| 2010-06-24 | $106.85 | $72.81 | 17 |
| 2010-06-23 | $106.85 | $70.35 | 17 |
| 2010-06-22 | $106.85 | $69.83 | 48 |
| 2010-06-20 | $106.85 | $71.26 | 17 |
| 2010-06-18 | $106.85 | $72.11 | 17 |
| 2010-06-17 | $106.85 | $69.03 | 89 |
| 2010-06-14 | $106.85 | $64.55 | 55 |
| 2010-06-12 | $106.85 | $74.58 | 15 |
| 2010-06-11 | $106.85 | $71.12 | 17 |
| 2010-06-10 | $106.85 | $66.17 | 38 |
| 2010-06-09 | $106.85 | $71.67 | 33 |
| 2010-06-04 | $97.02 | $69.48 | 34 |
| 2010-06-03 | $97.02 | $66.82 | 34 |
| 2010-06-02 | $97.02 | $66.89 | 16 |
| 2010-05-26 | $97.02 | $67.97 | 100 |
| 2010-05-21 | $96.76 | $69.93 | 17 |
| 2010-05-18 | $95.26 | $68.26 | 17 |
| 2010-05-15 | $94.75 | $65.31 | 16 |
| 2010-05-12 | $88.20 | $65.95 | 16 |
| 2010-05-09 | $82.75 | $64.90 | 16 |
| 2010-05-08 | $94.19 | $64.33 | 16 |
| 2010-05-06 | $82.75 | $62.25 | 31 |
| 2010-05-04 | $86.94 | $63.41 | 97 |
| 2010-05-03 | $82.47 | $63.63 | 28 |
| 2010-05-02 | $82.47 | $62.28 | 50 |
| 2010-04-29 | $80.00 | $64.93 | 36 |
| 2010-04-28 | $82.56 | $65.01 | 11 |
| 2010-04-21 | $85.73 | $58.02 | 56 |
| 2010-04-19 | $85.42 | $63.26 | 56 |
| 2010-04-13 | $81.20 | $64.78 | 55 |
| 2010-04-07 | $87.18 | $65.01 | 58 |
| 2010-04-01 | $87.11 | $67.69 | 81 |
| 2010-02-25 | $86.94 | $64.10 | 55 |
| 2010-02-22 | $89.46 | $64.37 | 28 |
| 2010-02-18 | $86.94 | $62.79 | 29 |
| 2010-02-16 | $89.69 | $64.75 | 29 |
| 2010-02-12 | $86.00 | $64.45 | 27 |
| 2010-02-11 | $86.00 | $63.02 | 53 |
| 2010-02-06 | $86.00 | $64.59 | 27 |
| 2010-02-04 | $86.00 | $68.99 | 26 |
| 2010-02-03 | $86.00 | $65.85 | 27 |
| 2010-02-02 | $86.00 | $60.93 | 27 |
| 2010-01-29 | $87.00 | $66.33 | 28 |
| 2010-01-23 | $87.00 | $65.60 | 28 |
| 2010-01-20 | $87.00 | $69.49 | 79 |
| 2010-01-19 | $87.00 | $69.55 | 26 |
| 2010-01-04 | $91.41 | $71.57 | 26 |
| 2009-12-21 | $89.40 | $67.70 | 60 |
| 2009-12-19 | $89.40 | $67.88 | 28 |
| 2009-12-17 | $87.00 | $66.42 | 28 |
| 2009-12-16 | $87.00 | $66.11 | 88 |
| 2009-12-15 | $87.00 | $65.96 | 29 |
| 2009-12-10 | $89.00 | $66.77 | 56 |
| 2009-12-08 | $90.78 | $67.00 | 30 |
| 2009-12-03 | $91.67 | $66.85 | 31 |
| 2009-12-01 | $91.67 | $65.19 | 31 |
| 2009-11-29 | $91.67 | $64.58 | 32 |
| 2009-11-17 | $113.63 | $66.83 | 29 |
| 2009-11-05 | $108.42 | $63.57 | 63 |
| 2009-10-28 | $89.00 | $63.71 | 30 |
| 2009-10-19 | $88.09 | $66.63 | 56 |
| 2009-10-08 | $79.30 | $65.24 | 29 |
| 2009-07-20 | $79.16 | $60.91 | 30 |
| 2009-07-15 | $79.16 | $61.11 | 59 |
| 2009-07-07 | $92.70 | $61.30 | 57 |
| 2009-06-12 | $84.75 | $60.29 | 30 |
| 2009-05-06 | $77.23 | $62.25 | 85 |