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| Date | Max Price | Avg Price | # Prices |
|---|---|---|---|
| 2012-02-04 | $3.05 | $2.24 | 16 |
| 2012-02-03 | $4.13 | $2.56 | 19 |
| 2012-02-02 | $4.64 | $3.01 | 8 |
| 2012-02-01 | $4.57 | $2.77 | 4 |
| 2012-01-31 | $4.64 | $2.79 | 4 |
| 2012-01-30 | $4.41 | $2.39 | 5 |
| 2012-01-29 | $4.32 | $2.28 | 10 |
| 2012-01-28 | $4.66 | $2.32 | 33 |
| 2012-01-27 | $4.77 | $2.47 | 5 |
| 2012-01-23 | $4.80 | $2.84 | 21 |
| 2012-01-21 | $5.10 | $2.92 | 12 |
| 2012-01-20 | $5.26 | $3.13 | 6 |
| 2012-01-19 | $5.18 | $2.84 | 29 |
| 2012-01-18 | $5.20 | $2.56 | 21 |
| 2012-01-17 | $3.99 | $2.40 | 10 |
| 2012-01-16 | $3.86 | $2.66 | 14 |
| 2012-01-15 | $4.05 | $2.48 | 10 |
| 2012-01-14 | $3.92 | $2.33 | 8 |
| 2012-01-13 | $3.54 | $2.33 | 15 |
| 2012-01-12 | $4.05 | $2.48 | 39 |
| 2012-01-11 | $4.24 | $2.14 | 33 |
| 2012-01-10 | $3.10 | $2.08 | 16 |
| 2012-01-08 | $4.04 | $2.15 | 12 |
| 2012-01-07 | $4.01 | $2.34 | 10 |
| 2012-01-06 | $3.73 | $2.23 | 7 |
| 2012-01-05 | $3.89 | $2.42 | 12 |
| 2012-01-04 | $3.44 | $2.21 | 8 |
| 2012-01-03 | $4.17 | $2.27 | 29 |
| 2012-01-02 | $3.44 | $1.91 | 18 |
| 2012-01-01 | $3.84 | $2.50 | 5 |
| 2011-12-31 | $4.06 | $2.26 | 30 |
| 2011-12-30 | $3.99 | $2.57 | 5 |
| 2011-12-29 | $4.23 | $2.61 | 5 |
| 2011-12-28 | $3.83 | $2.24 | 14 |
| 2011-12-27 | $4.23 | $2.39 | 11 |
| 2011-12-25 | $4.15 | $2.33 | 26 |
| 2011-12-24 | $4.47 | $2.59 | 5 |
| 2011-12-22 | $3.91 | $2.29 | 14 |
| 2011-12-21 | $3.99 | $1.89 | 16 |
| 2011-12-20 | $4.48 | $2.24 | 30 |
| 2011-12-19 | $3.75 | $1.96 | 11 |
| 2011-12-18 | $3.13 | $1.77 | 9 |
| 2011-12-17 | $2.03 | $1.41 | 22 |
| 2011-12-15 | $1.60 | $1.24 | 9 |
| 2011-12-14 | $1.74 | $1.45 | 3 |
| 2011-12-13 | $1.75 | $1.45 | 15 |
| 2011-12-11 | $1.68 | $1.68 | 1 |
| 2011-12-10 | $1.72 | $1.40 | 4 |
| 2011-12-07 | $1.47 | $1.47 | 7 |
| 2011-12-06 | $1.00 | $1.00 | 5 |
| 2011-12-05 | $1.15 | $1.04 | 7 |
| 2011-12-01 | $1.31 | $1.16 | 2 |
| 2011-11-30 | $1.31 | $1.20 | 6 |
| 2011-11-28 | $1.29 | $1.10 | 3 |
| 2011-11-25 | $1.15 | $1.07 | 2 |
| 2011-11-24 | $1.35 | $1.35 | 1 |
| 2011-11-23 | $1.36 | $1.36 | 1 |
| 2011-11-21 | $1.29 | $1.25 | 2 |
| 2011-11-19 | $1.27 | $1.19 | 4 |
| 2011-11-18 | $1.43 | $1.26 | 6 |
| 2011-11-17 | $1.84 | $1.40 | 6 |
| 2011-11-15 | $1.87 | $1.46 | 7 |
| 2011-11-13 | $2.48 | $1.67 | 8 |
| 2011-11-11 | $1.90 | $1.52 | 4 |
| 2011-11-10 | $3.00 | $1.76 | 7 |
| 2011-11-09 | $3.00 | $1.97 | 8 |
| 2011-11-03 | $1.98 | $1.49 | 8 |
| 2011-10-28 | $2.20 | $1.57 | 21 |
| 2011-10-27 | $2.53 | $1.71 | 5 |
| 2011-10-18 | $1.41 | $1.23 | 2 |
| 2011-10-14 | $1.00 | $1.00 | 1 |
| 2011-10-12 | $1.23 | $1.09 | 3 |
| 2011-10-11 | $3.00 | $1.62 | 6 |
| 2011-10-10 | $10.08 | $4.42 | 3 |
| 2011-10-09 | $10.08 | $3.19 | 5 |
| 2011-10-08 | $10.08 | $4.14 | 6 |
| 2011-10-06 | $10.08 | $5.72 | 2 |
| 2011-10-01 | $10.08 | $3.39 | 7 |
| 2011-09-28 | $10.08 | $3.38 | 15 |
| 2011-09-26 | $10.08 | $4.11 | 4 |
| 2011-09-24 | $10.08 | $4.42 | 5 |
| 2011-09-22 | $13.00 | $5.81 | 13 |
| 2011-09-21 | $10.75 | $7.42 | 7 |
| 2011-09-20 | $23.75 | $7.97 | 18 |
| 2011-09-18 | $23.75 | $10.39 | 8 |
| 2011-09-16 | $30.75 | $10.61 | 9 |
| 2011-09-15 | $30.75 | $9.24 | 24 |
| 2011-09-13 | $30.75 | $11.30 | 42 |
| 2011-09-12 | $20.25 | $11.26 | 41 |
| 2011-09-11 | $23.31 | $14.55 | 19 |
| 2011-09-10 | $29.67 | $14.51 | 19 |
| 2011-09-09 | $29.67 | $15.55 | 18 |
| 2011-09-07 | $39.46 | $16.65 | 10 |
| 2011-09-06 | $20.92 | $14.26 | 9 |
| 2011-09-02 | $27.73 | $11.24 | 20 |
| 2011-09-01 | $17.07 | $9.40 | 18 |
| 2011-08-30 | $17.07 | $7.69 | 46 |
| 2011-08-29 | $17.07 | $5.68 | 20 |
| 2011-08-27 | $10.75 | $4.69 | 9 |
| 2011-08-25 | $16.75 | $8.29 | 27 |
| 2011-08-24 | $7.89 | $4.77 | 9 |
| 2011-08-22 | $7.77 | $4.49 | 28 |
| 2011-08-21 | $7.64 | $4.81 | 21 |
| 2011-08-20 | $6.61 | $4.37 | 9 |
| 2011-08-18 | $9.22 | $5.05 | 62 |
| 2011-08-17 | $7.84 | $4.81 | 10 |
| 2011-08-16 | $7.84 | $4.51 | 20 |
| 2011-08-15 | $18.55 | $5.47 | 97 |
| 2011-08-13 | $18.55 | $5.88 | 12 |
| 2011-08-12 | $18.55 | $5.46 | 78 |
| 2011-08-11 | $8.55 | $5.02 | 31 |
| 2011-08-10 | $8.95 | $5.06 | 56 |
| 2011-08-09 | $8.95 | $5.10 | 56 |
| 2011-08-05 | $8.98 | $5.07 | 45 |
| 2011-08-03 | $6.50 | $4.66 | 10 |
| 2011-08-02 | $6.50 | $4.49 | 9 |
| 2011-07-31 | $7.69 | $5.04 | 13 |
| 2011-07-29 | $8.01 | $5.26 | 14 |
| 2011-07-28 | $9.53 | $5.07 | 63 |
| 2011-07-27 | $8.29 | $5.23 | 26 |
| 2011-07-26 | $7.87 | $5.28 | 12 |
| 2011-07-25 | $7.30 | $5.02 | 65 |
| 2011-07-24 | $7.94 | $5.14 | 13 |
| 2011-07-23 | $9.22 | $5.42 | 35 |
| 2011-07-19 | $9.66 | $5.42 | 77 |
| 2011-07-17 | $8.98 | $4.56 | 29 |
| 2011-07-16 | $6.45 | $4.18 | 10 |
| 2011-07-15 | $23.28 | $5.27 | 30 |
| 2011-07-14 | $6.45 | $4.01 | 10 |
| 2011-07-13 | $6.45 | $4.32 | 10 |
| 2011-07-12 | $6.45 | $4.62 | 9 |
| 2011-07-10 | $6.26 | $3.67 | 8 |
| 2011-07-09 | $7.01 | $3.62 | 9 |
| 2011-07-08 | $7.32 | $3.77 | 35 |
| 2011-07-07 | $7.63 | $4.39 | 23 |
| 2011-07-06 | $7.44 | $4.05 | 7 |
| 2011-07-02 | $25.30 | $6.78 | 18 |
| 2011-07-01 | $25.30 | $8.74 | 9 |
| 2011-06-29 | $25.43 | $15.19 | 9 |
| 2011-06-28 | $57.10 | $21.18 | 10 |
| 2011-06-27 | $57.10 | $20.05 | 47 |
| 2011-06-26 | $57.10 | $21.59 | 10 |
| 2011-06-25 | $57.10 | $19.89 | 18 |
| 2011-06-24 | $57.10 | $21.60 | 51 |
| 2011-06-23 | $57.10 | $21.65 | 11 |
| 2011-06-22 | $57.10 | $22.62 | 47 |
| 2011-06-21 | $57.10 | $23.71 | 22 |
| 2011-06-19 | $57.10 | $20.66 | 22 |
| 2011-06-18 | $57.10 | $22.41 | 56 |
| 2011-06-17 | $57.10 | $25.38 | 12 |
| 2011-06-16 | $57.10 | $23.70 | 19 |
| 2011-06-15 | $57.10 | $25.70 | 44 |
| 2011-06-14 | $57.10 | $25.37 | 101 |
| 2011-06-13 | $57.10 | $25.82 | 61 |
| 2011-06-12 | $57.10 | $25.08 | 46 |
| 2011-06-11 | $57.10 | $27.77 | 23 |
| 2011-06-10 | $57.10 | $27.43 | 65 |
| 2011-06-09 | $57.10 | $26.00 | 49 |
| 2011-06-08 | $57.10 | $25.58 | 50 |
| 2011-06-07 | $57.10 | $26.96 | 38 |
| 2011-06-06 | $57.10 | $24.59 | 59 |
| 2011-06-05 | $57.10 | $25.48 | 94 |
| 2011-06-04 | $57.10 | $23.75 | 37 |
| 2011-06-03 | $57.10 | $23.00 | 40 |
| 2011-06-02 | $57.10 | $20.88 | 74 |
| 2011-06-01 | $57.10 | $20.62 | 62 |
| 2011-05-31 | $57.10 | $19.48 | 95 |
| 2011-05-30 | $57.10 | $19.54 | 76 |
| 2011-05-29 | $57.10 | $19.53 | 37 |
| 2011-05-28 | $57.10 | $18.58 | 23 |
| 2011-05-27 | $57.10 | $20.60 | 172 |
| 2011-05-26 | $57.10 | $21.30 | 78 |
| 2011-05-25 | $57.10 | $19.54 | 104 |
| 2011-05-24 | $57.00 | $18.72 | 92 |
| 2011-05-23 | $56.95 | $22.37 | 11 |
| 2011-05-22 | $56.95 | $23.37 | 36 |
| 2011-05-21 | $56.95 | $24.54 | 36 |
| 2011-05-20 | $56.95 | $24.64 | 36 |
| 2011-05-19 | $56.95 | $25.45 | 25 |
| 2011-05-18 | $56.95 | $23.72 | 13 |
| 2011-05-17 | $56.95 | $19.04 | 114 |
| 2011-05-16 | $56.95 | $21.07 | 91 |
| 2011-05-15 | $56.95 | $20.81 | 33 |
| 2011-05-14 | $56.95 | $20.95 | 50 |
| 2011-05-13 | $56.95 | $20.12 | 59 |
| 2011-05-12 | $56.95 | $20.65 | 120 |
| 2011-05-11 | $56.95 | $19.73 | 95 |
| 2011-05-10 | $56.95 | $19.97 | 158 |
| 2011-05-09 | $67.11 | $21.89 | 133 |
| 2011-05-08 | $67.11 | $23.87 | 107 |
| 2011-05-07 | $67.11 | $23.02 | 158 |
| 2011-05-06 | $67.11 | $25.35 | 110 |
| 2011-05-05 | $67.11 | $25.15 | 174 |
| 2011-05-04 | $67.11 | $29.88 | 113 |
| 2011-05-03 | $67.11 | $31.10 | 106 |
| 2011-05-02 | $56.95 | $31.33 | 106 |
| 2011-05-01 | $56.95 | $34.00 | 31 |
| 2011-04-30 | $56.95 | $32.75 | 8 |
| 2011-04-29 | $56.95 | $30.89 | 21 |
| 2011-04-28 | $56.95 | $29.88 | 69 |
| 2011-04-27 | $56.95 | $31.07 | 36 |
| 2011-04-26 | $56.95 | $29.06 | 13 |
| 2011-04-25 | $56.95 | $24.13 | 25 |
| 2011-04-24 | $56.95 | $25.99 | 12 |
| 2011-04-23 | $56.95 | $26.01 | 15 |
| 2011-04-22 | $56.95 | $26.25 | 14 |
| 2011-04-21 | $56.95 | $26.65 | 24 |
| 2011-04-20 | $56.95 | $26.33 | 40 |
| 2011-04-19 | $56.95 | $27.20 | 56 |
| 2011-04-18 | $56.95 | $26.05 | 38 |
| 2011-04-17 | $37.00 | $25.41 | 40 |
| 2011-04-16 | $37.78 | $25.89 | 62 |
| 2011-04-15 | $37.00 | $26.26 | 43 |
| 2011-04-14 | $37.00 | $25.64 | 38 |
| 2011-04-13 | $36.75 | $25.00 | 14 |
| 2011-04-12 | $37.00 | $25.77 | 29 |
| 2011-04-11 | $35.46 | $23.98 | 41 |
| 2011-04-10 | $34.75 | $25.31 | 43 |
| 2011-04-09 | $35.99 | $24.89 | 13 |
| 2011-04-08 | $36.72 | $23.14 | 15 |
| 2011-04-07 | $40.19 | $23.31 | 15 |
| 2011-04-06 | $40.00 | $22.81 | 14 |
| 2011-04-05 | $40.00 | $23.32 | 15 |
| 2011-04-04 | $41.94 | $24.21 | 66 |
| 2011-04-01 | $39.87 | $23.79 | 15 |
| 2011-03-31 | $36.95 | $22.38 | 80 |
| 2011-03-30 | $34.50 | $23.58 | 13 |
| 2011-03-29 | $34.50 | $23.52 | 52 |
| 2011-03-28 | $29.32 | $23.89 | 13 |
| 2011-03-25 | $41.75 | $22.16 | 48 |
| 2011-03-24 | $42.72 | $23.00 | 111 |
| 2011-03-23 | $42.47 | $20.83 | 32 |
| 2011-03-21 | $30.25 | $16.97 | 60 |
| 2011-03-20 | $39.00 | $18.75 | 15 |
| 2011-03-14 | $76.60 | $24.37 | 46 |
| 2011-03-13 | $76.60 | $24.47 | 71 |
| 2011-03-12 | $76.60 | $23.86 | 15 |
| 2011-03-11 | $76.60 | $24.74 | 13 |
| 2011-03-08 | $76.60 | $28.11 | 15 |
| 2011-03-07 | $76.60 | $29.10 | 28 |
| 2011-03-06 | $76.60 | $28.64 | 16 |
| 2011-03-05 | $76.60 | $29.51 | 65 |
| 2011-03-02 | $76.60 | $28.86 | 61 |
| 2011-03-01 | $76.60 | $28.52 | 15 |
| 2011-02-28 | $76.60 | $28.71 | 48 |
| 2011-02-27 | $76.60 | $30.88 | 16 |
| 2011-02-26 | $76.60 | $32.03 | 46 |
| 2011-02-25 | $76.60 | $32.71 | 60 |
| 2011-02-24 | $76.60 | $32.82 | 99 |
| 2011-02-23 | $76.60 | $31.88 | 42 |
| 2011-02-22 | $76.60 | $32.91 | 15 |
| 2011-02-21 | $76.60 | $32.27 | 44 |
| 2011-02-19 | $76.60 | $31.51 | 32 |
| 2011-02-18 | $76.60 | $33.08 | 14 |
| 2011-02-16 | $76.60 | $33.58 | 16 |
| 2011-02-09 | $76.60 | $34.15 | 50 |
| 2011-02-03 | $76.60 | $35.77 | 29 |
| 2011-01-31 | $76.60 | $35.96 | 44 |
| 2011-01-30 | $76.60 | $35.34 | 14 |
| 2011-01-29 | $76.60 | $31.52 | 15 |
| 2011-01-26 | $76.60 | $33.20 | 15 |
| 2011-01-25 | $76.60 | $34.84 | 13 |
| 2011-01-24 | $76.60 | $35.95 | 47 |
| 2011-01-21 | $76.60 | $37.81 | 44 |
| 2011-01-20 | $76.60 | $37.96 | 28 |
| 2011-01-17 | $76.25 | $40.24 | 14 |
| 2011-01-16 | $76.25 | $40.29 | 28 |
| 2011-01-15 | $76.25 | $40.34 | 14 |
| 2011-01-13 | $78.00 | $37.68 | 14 |
| 2011-01-12 | $70.00 | $36.39 | 14 |
| 2011-01-11 | $80.23 | $40.85 | 60 |
| 2011-01-10 | $71.00 | $37.01 | 81 |
| 2011-01-08 | $72.32 | $37.07 | 16 |
| 2011-01-07 | $73.80 | $37.51 | 138 |
| 2011-01-06 | $73.88 | $38.72 | 28 |
| 2011-01-05 | $65.48 | $36.98 | 45 |
| 2011-01-04 | $72.99 | $37.89 | 76 |
| 2011-01-03 | $64.80 | $36.27 | 60 |
| 2011-01-02 | $70.65 | $39.48 | 30 |
| 2010-12-30 | $65.32 | $35.50 | 31 |
| 2010-12-29 | $33.51 | $33.51 | 1 |
| 2010-12-27 | $65.08 | $35.17 | 45 |
| 2010-12-26 | $62.46 | $34.83 | 32 |
| 2010-12-23 | $62.46 | $33.10 | 28 |
| 2010-12-22 | $62.46 | $30.45 | 30 |
| 2010-12-21 | $62.46 | $32.33 | 15 |
| 2010-12-19 | $62.46 | $31.28 | 15 |
| 2010-12-17 | $62.46 | $33.15 | 120 |
| 2010-12-16 | $62.46 | $34.70 | 83 |
| 2010-12-15 | $62.46 | $33.61 | 44 |
| 2010-12-14 | $62.46 | $32.54 | 277 |
| 2010-12-13 | $62.46 | $36.05 | 14 |
| 2010-12-12 | $62.46 | $36.30 | 15 |
| 2010-12-11 | $62.46 | $37.32 | 15 |
| 2010-12-10 | $62.46 | $36.50 | 44 |
| 2010-12-09 | $62.46 | $39.44 | 45 |
| 2010-12-08 | $62.46 | $37.28 | 28 |
| 2010-12-07 | $62.46 | $38.78 | 89 |
| 2010-12-06 | $62.46 | $39.82 | 77 |
| 2010-12-05 | $62.46 | $40.27 | 15 |
| 2010-12-03 | $62.46 | $39.67 | 45 |
| 2010-12-02 | $62.46 | $38.08 | 80 |
| 2010-12-01 | $68.95 | $38.09 | 135 |
| 2010-11-30 | $66.39 | $45.86 | 56 |
| 2010-11-29 | $66.25 | $44.65 | 13 |
| 2010-11-26 | $62.46 | $43.22 | 14 |
| 2010-11-25 | $66.25 | $44.29 | 14 |
| 2010-11-24 | $65.00 | $44.54 | 79 |
| 2010-11-23 | $65.00 | $46.02 | 51 |
| 2010-11-22 | $73.73 | $49.41 | 50 |
| 2010-11-20 | $120.37 | $52.21 | 26 |
| 2010-11-19 | $120.37 | $54.07 | 13 |
| 2010-11-18 | $120.37 | $48.44 | 120 |
| 2010-11-17 | $120.37 | $50.35 | 42 |
| 2010-11-16 | $120.37 | $48.47 | 56 |
| 2010-11-15 | $120.37 | $46.53 | 48 |
| 2010-11-14 | $61.11 | $44.40 | 13 |
| 2010-11-13 | $61.11 | $45.78 | 52 |
| 2010-11-11 | $120.37 | $50.20 | 14 |
| 2010-11-09 | $120.37 | $53.62 | 13 |
| 2010-11-08 | $120.37 | $53.55 | 26 |
| 2010-11-06 | $120.37 | $54.25 | 14 |
| 2010-11-05 | $120.37 | $54.92 | 38 |
| 2010-11-04 | $120.37 | $49.86 | 63 |
| 2010-11-03 | $120.37 | $56.97 | 14 |
| 2010-11-02 | $120.37 | $55.00 | 28 |
| 2010-11-01 | $120.37 | $56.03 | 28 |
| 2010-10-30 | $120.37 | $59.35 | 14 |
| 2010-10-28 | $120.37 | $63.30 | 14 |
| 2010-10-27 | $120.37 | $60.94 | 62 |
| 2010-10-26 | $120.37 | $58.47 | 69 |
| 2010-10-24 | $120.37 | $58.31 | 14 |
| 2010-10-23 | $120.37 | $58.25 | 42 |
| 2010-10-21 | $120.37 | $58.35 | 13 |
| 2010-10-20 | $120.37 | $55.07 | 71 |
| 2010-10-19 | $73.29 | $50.25 | 13 |
| 2010-10-18 | $120.37 | $53.95 | 107 |
| 2010-10-17 | $120.37 | $51.04 | 43 |
| 2010-10-13 | $120.37 | $60.08 | 16 |
| 2010-10-04 | $120.37 | $63.38 | 48 |
| 2010-10-02 | $120.37 | $62.69 | 48 |
| 2010-10-01 | $120.37 | $61.37 | 32 |
| 2010-09-30 | $120.37 | $62.38 | 32 |
| 2010-09-28 | $120.37 | $64.63 | 16 |
| 2010-09-27 | $120.37 | $65.50 | 16 |
| 2010-09-26 | $120.37 | $65.31 | 16 |
| 2010-09-24 | $120.37 | $63.84 | 16 |
| 2010-09-23 | $120.37 | $64.59 | 47 |
| 2010-09-22 | $120.37 | $62.76 | 32 |
| 2010-09-21 | $120.37 | $62.14 | 68 |
| 2010-09-20 | $120.37 | $64.81 | 32 |
| 2010-09-19 | $120.37 | $63.08 | 32 |
| 2010-09-13 | $120.37 | $68.73 | 16 |
| 2010-09-12 | $120.37 | $68.25 | 16 |
| 2010-09-09 | $120.37 | $69.68 | 49 |
| 2010-09-08 | $120.37 | $70.25 | 34 |
| 2010-09-07 | $120.37 | $69.92 | 17 |
| 2010-09-03 | $120.37 | $71.85 | 17 |
| 2010-09-02 | $120.37 | $71.58 | 68 |
| 2010-08-29 | $120.37 | $69.76 | 17 |
| 2010-08-26 | $120.37 | $70.86 | 16 |
| 2010-08-25 | $120.37 | $68.81 | 71 |
| 2010-08-24 | $120.37 | $70.38 | 30 |
| 2010-08-23 | $120.37 | $73.28 | 32 |
| 2010-08-22 | $120.37 | $74.48 | 33 |
| 2010-08-21 | $120.37 | $70.92 | 47 |
| 2010-08-20 | $113.94 | $72.46 | 36 |
| 2010-08-19 | $113.47 | $70.78 | 54 |
| 2010-08-18 | $113.47 | $70.39 | 109 |
| 2010-08-16 | $113.47 | $65.11 | 122 |
| 2010-08-12 | $113.47 | $69.99 | 36 |
| 2010-08-11 | $113.47 | $69.08 | 35 |
| 2010-08-09 | $90.30 | $62.78 | 13 |
| 2010-08-08 | $90.33 | $65.52 | 18 |
| 2010-08-06 | $94.75 | $66.91 | 53 |
| 2010-08-05 | $94.48 | $67.99 | 17 |
| 2010-08-03 | $87.56 | $61.59 | 28 |
| 2010-08-02 | $87.56 | $62.36 | 30 |
| 2010-07-31 | $89.59 | $61.11 | 29 |
| 2010-07-30 | $89.59 | $60.11 | 32 |
| 2010-07-29 | $89.59 | $64.83 | 15 |
| 2010-07-28 | $89.59 | $61.76 | 32 |
| 2010-07-27 | $89.56 | $61.64 | 32 |
| 2010-07-26 | $89.52 | $62.75 | 16 |
| 2010-07-25 | $87.57 | $61.26 | 16 |
| 2010-07-24 | $89.01 | $62.67 | 17 |
| 2010-07-22 | $88.75 | $61.82 | 36 |
| 2010-07-13 | $88.01 | $61.20 | 34 |
| 2010-07-01 | $87.56 | $58.47 | 53 |
| 2010-06-30 | $87.56 | $61.94 | 54 |
| 2010-06-24 | $87.56 | $63.53 | 36 |
| 2010-06-23 | $87.56 | $63.24 | 17 |
| 2010-06-22 | $87.56 | $65.47 | 17 |
| 2010-06-19 | $87.56 | $62.55 | 18 |
| 2010-06-18 | $87.56 | $59.28 | 57 |
| 2010-06-17 | $87.56 | $64.01 | 18 |
| 2010-06-16 | $87.56 | $62.98 | 17 |
| 2010-06-15 | $87.56 | $63.62 | 16 |
| 2010-06-13 | $87.56 | $64.48 | 52 |
| 2010-06-10 | $87.56 | $61.47 | 57 |
| 2010-06-04 | $89.59 | $64.38 | 54 |
| 2010-06-02 | $89.59 | $63.32 | 16 |
| 2010-06-01 | $89.59 | $62.40 | 18 |
| 2010-05-28 | $89.59 | $62.63 | 18 |
| 2010-05-26 | $89.59 | $62.42 | 18 |
| 2010-05-25 | $89.59 | $62.16 | 14 |
| 2010-05-20 | $88.76 | $61.16 | 17 |
| 2010-05-16 | $83.00 | $61.00 | 17 |
| 2010-05-15 | $87.25 | $61.41 | 17 |
| 2010-05-14 | $87.00 | $61.51 | 68 |
| 2010-05-11 | $83.20 | $58.79 | 140 |
| 2010-05-06 | $83.00 | $60.75 | 30 |
| 2010-05-05 | $82.77 | $61.89 | 16 |
| 2010-05-02 | $82.77 | $60.04 | 17 |
| 2010-04-28 | $74.25 | $58.73 | 6 |
| 2010-04-23 | $82.75 | $59.09 | 76 |
| 2010-04-22 | $82.75 | $59.24 | 27 |
| 2010-03-30 | $86.50 | $61.26 | 27 |
| 2010-03-27 | $83.03 | $60.85 | 27 |
| 2010-03-26 | $83.03 | $60.72 | 27 |
| 2010-03-22 | $83.27 | $62.33 | 29 |
| 2010-03-18 | $83.03 | $62.01 | 49 |
| 2010-03-16 | $83.12 | $59.00 | 157 |
| 2010-03-15 | $83.03 | $62.01 | 27 |
| 2010-03-09 | $83.18 | $61.95 | 53 |
| 2010-02-16 | $84.46 | $67.27 | 26 |
| 2010-02-12 | $84.20 | $65.11 | 27 |
| 2010-02-06 | $84.20 | $66.44 | 26 |
| 2010-02-03 | $88.37 | $67.65 | 26 |
| 2010-01-31 | $88.80 | $69.17 | 26 |
| 2010-01-28 | $84.69 | $67.58 | 25 |
| 2010-01-26 | $84.69 | $69.34 | 51 |
| 2010-01-25 | $86.52 | $69.09 | 103 |
| 2010-01-20 | $84.84 | $67.75 | 28 |
| 2010-01-19 | $87.70 | $69.13 | 54 |
| 2010-01-18 | $89.29 | $68.47 | 28 |
| 2010-01-11 | $87.63 | $69.23 | 74 |
| 2010-01-06 | $90.65 | $70.64 | 25 |
| 2009-12-19 | $89.42 | $67.17 | 62 |
| 2009-12-14 | $86.80 | $67.64 | 28 |
| 2009-12-10 | $88.15 | $66.91 | 88 |
| 2009-12-09 | $88.15 | $66.81 | 32 |
| 2009-12-04 | $88.63 | $64.12 | 65 |
| 2009-12-03 | $89.55 | $65.51 | 34 |
| 2009-12-01 | $90.27 | $65.49 | 32 |
| 2009-11-19 | $116.36 | $64.70 | 31 |
| 2009-11-18 | $116.28 | $66.75 | 29 |
| 2009-11-16 | $116.28 | $66.55 | 57 |
| 2009-11-05 | $98.67 | $63.80 | 30 |
| 2009-10-15 | $86.80 | $66.27 | 29 |
| 2009-09-30 | $83.95 | $66.29 | 28 |
| 2009-09-28 | $83.95 | $65.81 | 29 |
| 2009-09-23 | $97.97 | $67.82 | 29 |
| 2009-09-22 | $97.97 | $67.33 | 28 |
| 2009-09-16 | $97.97 | $64.81 | 29 |
| 2009-09-15 | $97.97 | $71.07 | 88 |
| 2009-09-07 | $88.09 | $70.01 | 29 |
| 2009-09-06 | $90.20 | $69.26 | 27 |
| 2009-09-05 | $90.20 | $69.71 | 55 |
| 2009-09-02 | $90.20 | $71.17 | 28 |
| 2009-09-01 | $108.20 | $72.03 | 56 |
| 2009-08-27 | $108.20 | $74.92 | 30 |
| 2009-08-26 | $108.20 | $73.49 | 59 |
| 2009-08-25 | $101.65 | $71.62 | 61 |
| 2009-08-24 | $85.19 | $69.99 | 113 |
| 2009-08-23 | $85.19 | $70.20 | 55 |
| 2009-08-21 | $85.19 | $70.62 | 58 |
| 2009-08-20 | $85.50 | $72.24 | 102 |
| 2009-08-17 | $89.20 | $68.51 | 85 |
| 2009-08-11 | $89.20 | $67.05 | 31 |
| 2009-08-09 | $89.20 | $66.22 | 90 |
| 2009-08-03 | $83.95 | $64.73 | 30 |
| 2009-07-02 | $85.50 | $65.17 | 30 |
| 2009-06-30 | $85.50 | $58.85 | 30 |
| 2009-05-29 | $102.75 | $65.44 | 29 |
| 2009-05-25 | $102.75 | $64.52 | 57 |
| 2009-05-24 | $102.75 | $66.10 | 29 |
| 2009-05-02 | $82.20 | $62.67 | 28 |
| 2009-04-28 | $82.20 | $58.76 | 28 |
| 2009-04-27 | $82.20 | $59.20 | 56 |
| 2009-01-01 | $95.76 | $57.85 | 24 |