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| Date | Max Price | Avg Price | # Prices |
|---|---|---|---|
| 2012-02-22 | $48.98 | $20.85 | 38 |
| 2012-02-21 | $54.94 | $22.76 | 24 |
| 2012-02-20 | $59.47 | $22.63 | 26 |
| 2012-02-19 | $59.47 | $20.72 | 32 |
| 2012-02-18 | $59.47 | $23.86 | 11 |
| 2012-02-17 | $60.28 | $23.64 | 45 |
| 2012-02-16 | $60.58 | $21.17 | 79 |
| 2012-02-15 | $60.73 | $21.80 | 30 |
| 2012-02-14 | $60.74 | $20.20 | 25 |
| 2012-02-13 | $60.74 | $24.56 | 11 |
| 2012-02-12 | $60.74 | $21.80 | 30 |
| 2012-02-11 | $64.38 | $20.60 | 77 |
| 2012-02-10 | $64.49 | $22.23 | 41 |
| 2012-02-09 | $64.57 | $22.40 | 50 |
| 2012-02-08 | $64.57 | $25.84 | 24 |
| 2012-02-07 | $53.66 | $22.62 | 46 |
| 2012-02-06 | $55.29 | $31.12 | 9 |
| 2012-02-05 | $55.29 | $28.61 | 9 |
| 2012-02-04 | $55.29 | $30.02 | 9 |
| 2012-02-03 | $55.29 | $25.74 | 60 |
| 2012-02-02 | $55.29 | $28.37 | 26 |
| 2012-02-01 | $56.28 | $26.96 | 65 |
| 2012-01-31 | $55.29 | $25.85 | 29 |
| 2012-01-30 | $54.48 | $27.50 | 11 |
| 2012-01-29 | $54.48 | $26.85 | 11 |
| 2012-01-28 | $48.88 | $20.93 | 58 |
| 2012-01-27 | $48.89 | $20.71 | 68 |
| 2012-01-26 | $48.98 | $20.15 | 155 |
| 2012-01-25 | $51.10 | $20.44 | 37 |
| 2012-01-24 | $71.29 | $29.70 | 28 |
| 2012-01-23 | $71.29 | $32.99 | 11 |
| 2012-01-22 | $71.29 | $27.46 | 37 |
| 2012-01-21 | $71.29 | $29.71 | 15 |
| 2012-01-20 | $71.29 | $31.65 | 32 |
| 2012-01-19 | $70.27 | $31.06 | 73 |
| 2012-01-18 | $69.91 | $31.09 | 97 |
| 2012-01-17 | $68.92 | $31.68 | 137 |
| 2012-01-16 | $68.93 | $32.33 | 55 |
| 2012-01-15 | $68.92 | $33.78 | 101 |
| 2012-01-14 | $68.92 | $32.41 | 18 |
| 2012-01-13 | $73.92 | $32.06 | 56 |
| 2012-01-12 | $89.27 | $31.38 | 38 |
| 2012-01-11 | $89.27 | $35.09 | 49 |
| 2012-01-10 | $89.27 | $40.79 | 124 |
| 2012-01-09 | $89.27 | $39.96 | 98 |
| 2012-01-08 | $89.27 | $41.30 | 95 |
| 2012-01-07 | $83.71 | $43.88 | 138 |
| 2012-01-06 | $78.50 | $42.85 | 60 |
| 2012-01-05 | $78.50 | $40.45 | 67 |
| 2012-01-04 | $78.50 | $35.89 | 128 |
| 2012-01-03 | $63.88 | $32.45 | 126 |
| 2012-01-02 | $68.61 | $31.39 | 91 |
| 2012-01-01 | $61.20 | $31.48 | 16 |
| 2011-12-31 | $43.80 | $27.96 | 35 |
| 2011-12-30 | $37.20 | $26.97 | 93 |
| 2011-12-29 | $41.71 | $31.37 | 14 |
| 2011-12-28 | $41.71 | $35.40 | 4 |
| 2011-12-27 | $66.79 | $32.11 | 112 |
| 2011-12-26 | $66.79 | $30.28 | 42 |
| 2011-12-24 | $66.79 | $30.96 | 32 |
| 2011-12-23 | $52.43 | $31.93 | 58 |
| 2011-12-22 | $52.80 | $29.55 | 106 |
| 2011-12-21 | $49.91 | $31.34 | 34 |
| 2011-12-20 | $68.75 | $31.06 | 36 |
| 2011-12-19 | $68.75 | $31.61 | 199 |
| 2011-12-18 | $65.00 | $29.37 | 50 |
| 2011-12-17 | $69.00 | $27.96 | 85 |
| 2011-12-16 | $69.74 | $30.08 | 49 |
| 2011-12-15 | $69.74 | $31.08 | 21 |
| 2011-12-14 | $66.71 | $31.25 | 141 |
| 2011-12-13 | $65.00 | $30.31 | 35 |
| 2011-12-12 | $74.99 | $33.37 | 97 |
| 2011-12-11 | $74.99 | $30.15 | 50 |
| 2011-12-10 | $78.19 | $35.04 | 26 |
| 2011-12-09 | $78.19 | $34.93 | 48 |
| 2011-12-08 | $78.19 | $35.51 | 32 |
| 2011-12-07 | $78.19 | $34.75 | 52 |
| 2011-12-06 | $78.19 | $33.34 | 33 |
| 2011-12-05 | $78.19 | $36.33 | 85 |
| 2011-12-04 | $78.19 | $35.13 | 35 |
| 2011-12-03 | $71.50 | $58.08 | 3 |
| 2011-12-02 | $71.50 | $34.98 | 32 |
| 2011-12-01 | $71.50 | $34.26 | 29 |
| 2011-11-30 | $71.50 | $33.14 | 68 |
| 2011-11-29 | $71.50 | $31.16 | 18 |
| 2011-11-28 | $71.50 | $32.70 | 14 |
| 2011-11-27 | $71.50 | $36.64 | 41 |
| 2011-11-26 | $71.50 | $36.55 | 28 |
| 2011-11-24 | $71.50 | $40.95 | 9 |
| 2011-11-23 | $71.50 | $39.28 | 16 |
| 2011-11-21 | $71.50 | $43.99 | 26 |
| 2011-11-19 | $71.50 | $46.84 | 12 |
| 2011-11-18 | $57.75 | $46.42 | 3 |
| 2011-11-17 | $64.50 | $40.02 | 24 |
| 2011-11-16 | $68.50 | $50.53 | 8 |
| 2011-11-15 | $68.50 | $52.09 | 14 |
| 2011-11-14 | $68.50 | $59.00 | 2 |
| 2011-11-13 | $69.75 | $39.91 | 48 |
| 2011-11-12 | $68.50 | $43.91 | 11 |
| 2011-11-10 | $68.50 | $52.25 | 10 |
| 2011-11-09 | $70.00 | $42.92 | 24 |
| 2011-11-08 | $83.95 | $44.71 | 58 |
| 2011-11-06 | $83.95 | $43.71 | 46 |
| 2011-11-05 | $83.95 | $46.36 | 27 |
| 2011-11-03 | $71.50 | $54.16 | 3 |
| 2011-11-02 | $71.50 | $44.04 | 13 |
| 2011-10-30 | $71.50 | $46.36 | 11 |
| 2011-10-26 | $71.50 | $53.98 | 20 |
| 2011-10-25 | $90.00 | $53.42 | 25 |
| 2011-10-23 | $90.00 | $49.31 | 58 |
| 2011-10-22 | $71.50 | $48.74 | 13 |
| 2011-10-19 | $90.00 | $54.43 | 34 |
| 2011-10-18 | $72.10 | $71.90 | 3 |
| 2011-10-16 | $72.10 | $54.87 | 30 |
| 2011-10-15 | $90.00 | $53.78 | 17 |
| 2011-10-13 | $72.10 | $54.42 | 8 |
| 2011-10-12 | $90.00 | $53.68 | 84 |
| 2011-10-10 | $90.00 | $59.77 | 12 |
| 2011-10-09 | $72.11 | $54.01 | 45 |
| 2011-10-08 | $90.00 | $48.90 | 9 |
| 2011-10-07 | $90.00 | $55.68 | 14 |
| 2011-10-06 | $90.00 | $55.33 | 42 |
| 2011-10-04 | $90.00 | $56.34 | 14 |
| 2011-10-03 | $90.00 | $55.88 | 14 |
| 2011-09-30 | $90.00 | $54.49 | 14 |
| 2011-09-29 | $90.00 | $53.97 | 57 |
| 2011-09-27 | $90.00 | $54.80 | 14 |
| 2011-09-26 | $90.00 | $58.18 | 30 |
| 2011-09-25 | $70.95 | $53.02 | 12 |
| 2011-09-24 | $90.00 | $55.21 | 13 |
| 2011-09-22 | $70.95 | $51.75 | 12 |
| 2011-09-21 | $90.00 | $54.91 | 42 |
| 2011-09-20 | $90.00 | $55.23 | 43 |
| 2011-09-18 | $90.00 | $54.81 | 63 |
| 2011-09-16 | $90.00 | $53.62 | 78 |
| 2011-09-15 | $90.00 | $54.05 | 28 |
| 2011-09-13 | $90.00 | $57.15 | 56 |
| 2011-09-12 | $90.00 | $55.01 | 44 |
| 2011-09-09 | $90.00 | $54.52 | 97 |
| 2011-09-08 | $72.24 | $55.05 | 30 |
| 2011-09-07 | $53.50 | $53.50 | 1 |
| 2011-09-06 | $90.00 | $56.29 | 32 |
| 2011-09-05 | $90.00 | $55.72 | 17 |
| 2011-09-03 | $90.00 | $57.33 | 17 |
| 2011-08-30 | $90.00 | $58.84 | 30 |
| 2011-08-29 | $90.00 | $57.61 | 32 |
| 2011-08-26 | $90.00 | $59.40 | 68 |
| 2011-08-25 | $75.00 | $59.07 | 16 |
| 2011-08-24 | $75.00 | $60.43 | 16 |
| 2011-08-23 | $88.96 | $63.66 | 16 |
| 2011-08-22 | $80.30 | $63.21 | 16 |
| 2011-08-21 | $88.96 | $62.16 | 93 |
| 2011-08-20 | $88.96 | $64.37 | 34 |
| 2011-08-19 | $88.96 | $64.23 | 33 |
| 2011-08-18 | $89.00 | $65.45 | 48 |
| 2011-08-16 | $89.00 | $64.48 | 33 |
| 2011-08-15 | $89.00 | $66.15 | 35 |
| 2011-08-14 | $89.00 | $66.84 | 17 |
| 2011-08-13 | $89.00 | $67.30 | 18 |
| 2011-08-12 | $88.96 | $67.41 | 18 |
| 2011-08-11 | $89.00 | $66.29 | 17 |
| 2011-08-10 | $88.96 | $66.36 | 50 |
| 2011-08-09 | $80.30 | $65.11 | 15 |
| 2011-08-05 | $80.30 | $63.50 | 17 |
| 2011-08-04 | $88.96 | $64.64 | 35 |
| 2011-08-02 | $88.96 | $62.54 | 80 |
| 2011-08-01 | $79.94 | $64.13 | 17 |
| 2011-07-31 | $88.96 | $65.41 | 17 |
| 2011-07-30 | $88.96 | $65.73 | 18 |
| 2011-07-29 | $88.96 | $63.15 | 87 |
| 2011-07-28 | $88.96 | $64.50 | 46 |
| 2011-07-27 | $79.53 | $62.97 | 13 |
| 2011-07-26 | $76.11 | $62.91 | 31 |
| 2011-07-25 | $9999.99 | $616.22 | 36 |
| 2011-07-19 | $88.96 | $62.80 | 16 |
| 2011-07-18 | $76.11 | $61.05 | 15 |
| 2011-07-17 | $88.96 | $59.65 | 50 |
| 2011-07-15 | $76.11 | $60.90 | 16 |
| 2011-07-14 | $88.96 | $62.34 | 17 |
| 2011-07-12 | $88.96 | $60.27 | 126 |
| 2011-07-10 | $88.96 | $61.84 | 18 |
| 2011-07-09 | $88.96 | $61.83 | 36 |
| 2011-07-06 | $88.96 | $62.33 | 19 |
| 2011-07-05 | $88.96 | $62.85 | 17 |
| 2011-07-02 | $88.96 | $61.85 | 19 |
| 2011-07-01 | $88.96 | $62.58 | 19 |
| 2011-06-30 | $88.96 | $62.63 | 19 |
| 2011-06-28 | $88.96 | $62.54 | 75 |
| 2011-06-23 | $88.96 | $63.54 | 36 |
| 2011-06-22 | $88.96 | $62.27 | 67 |
| 2011-06-21 | $88.96 | $64.91 | 18 |
| 2011-06-20 | $88.96 | $63.86 | 18 |
| 2011-06-18 | $88.96 | $62.21 | 54 |
| 2011-06-17 | $88.96 | $64.45 | 53 |
| 2011-06-16 | $88.96 | $65.08 | 38 |
| 2011-06-15 | $88.96 | $65.18 | 19 |
| 2011-06-14 | $88.96 | $64.14 | 220 |
| 2011-06-13 | $88.96 | $65.43 | 87 |
| 2011-06-12 | $88.96 | $63.37 | 51 |
| 2011-06-11 | $88.96 | $62.85 | 63 |
| 2011-06-10 | $88.75 | $64.80 | 89 |
| 2011-06-09 | $88.00 | $64.16 | 135 |
| 2011-06-08 | $87.25 | $64.20 | 88 |
| 2011-06-07 | $86.00 | $62.58 | 33 |
| 2011-06-06 | $85.75 | $63.45 | 54 |
| 2011-06-05 | $85.25 | $64.87 | 70 |
| 2011-06-04 | $84.60 | $65.88 | 31 |
| 2011-06-03 | $84.60 | $64.86 | 34 |
| 2011-06-02 | $84.60 | $64.47 | 34 |
| 2011-06-01 | $84.25 | $63.28 | 54 |
| 2011-05-31 | $83.50 | $66.43 | 17 |
| 2011-05-30 | $82.75 | $64.06 | 18 |
| 2011-05-29 | $82.00 | $64.79 | 17 |
| 2011-05-28 | $81.25 | $66.83 | 17 |
| 2011-05-27 | $81.25 | $65.60 | 52 |
| 2011-05-26 | $80.25 | $63.56 | 14 |
| 2011-05-25 | $80.00 | $66.07 | 63 |
| 2011-05-24 | $79.50 | $66.11 | 62 |
| 2011-05-23 | $79.25 | $64.96 | 68 |
| 2011-05-22 | $78.75 | $66.23 | 63 |
| 2011-05-21 | $77.00 | $65.41 | 31 |
| 2011-05-20 | $76.75 | $64.15 | 32 |
| 2011-05-19 | $76.75 | $63.50 | 96 |
| 2011-05-18 | $76.20 | $63.93 | 66 |
| 2011-05-17 | $76.11 | $63.50 | 82 |
| 2011-05-16 | $76.11 | $63.81 | 48 |
| 2011-05-15 | $76.11 | $62.65 | 33 |
| 2011-05-14 | $76.11 | $61.23 | 33 |
| 2011-05-13 | $76.11 | $60.25 | 34 |
| 2011-05-12 | $76.11 | $58.73 | 33 |
| 2011-05-11 | $76.11 | $59.11 | 130 |
| 2011-05-10 | $76.11 | $62.48 | 63 |
| 2011-05-09 | $76.11 | $60.94 | 132 |
| 2011-05-08 | $76.11 | $61.09 | 20 |
| 2011-05-07 | $76.75 | $59.07 | 85 |
| 2011-05-06 | $76.70 | $62.84 | 31 |
| 2011-05-05 | $76.70 | $63.12 | 65 |
| 2011-05-04 | $76.75 | $58.17 | 48 |
| 2011-05-03 | $77.70 | $60.26 | 70 |
| 2011-05-02 | $77.70 | $63.03 | 48 |
| 2011-05-01 | $77.70 | $64.85 | 11 |
| 2011-04-30 | $77.70 | $65.96 | 13 |
| 2011-04-29 | $76.70 | $65.60 | 36 |
| 2011-04-28 | $76.70 | $62.12 | 44 |
| 2011-04-27 | $76.75 | $59.13 | 79 |
| 2011-04-26 | $76.11 | $60.54 | 59 |
| 2011-04-25 | $76.11 | $60.72 | 15 |
| 2011-04-24 | $76.11 | $59.21 | 29 |
| 2011-04-23 | $76.11 | $59.09 | 16 |
| 2011-04-22 | $76.11 | $59.18 | 31 |
| 2011-04-21 | $76.11 | $58.72 | 39 |
| 2011-04-20 | $76.11 | $60.25 | 42 |
| 2011-04-19 | $76.11 | $60.13 | 57 |
| 2011-04-18 | $76.11 | $59.02 | 42 |
| 2011-04-17 | $76.11 | $58.48 | 32 |
| 2011-04-16 | $76.11 | $59.18 | 16 |
| 2011-04-15 | $76.11 | $58.63 | 31 |
| 2011-04-14 | $76.11 | $62.04 | 28 |
| 2011-04-13 | $76.11 | $57.34 | 16 |
| 2011-04-12 | $76.11 | $58.59 | 30 |
| 2011-04-11 | $76.11 | $59.91 | 31 |
| 2011-04-10 | $76.11 | $60.46 | 45 |
| 2011-04-09 | $76.11 | $58.51 | 15 |
| 2011-04-08 | $76.11 | $61.12 | 15 |
| 2011-04-07 | $76.11 | $60.16 | 68 |
| 2011-04-06 | $76.11 | $61.48 | 31 |
| 2011-04-05 | $76.11 | $60.44 | 16 |
| 2011-04-04 | $76.11 | $61.42 | 57 |
| 2011-03-30 | $76.11 | $62.98 | 16 |
| 2011-03-25 | $74.50 | $61.85 | 15 |
| 2011-03-22 | $74.50 | $62.29 | 32 |
| 2011-03-21 | $74.50 | $64.22 | 15 |
| 2011-03-20 | $74.50 | $63.41 | 16 |
| 2011-03-17 | $74.50 | $63.65 | 13 |
| 2011-03-14 | $74.50 | $62.20 | 16 |
| 2011-03-10 | $74.50 | $60.06 | 17 |
| 2011-03-09 | $83.26 | $63.27 | 67 |
| 2011-03-08 | $83.26 | $57.90 | 17 |
| 2011-03-07 | $83.26 | $58.23 | 33 |
| 2011-03-06 | $83.26 | $57.31 | 17 |
| 2011-03-03 | $83.26 | $59.28 | 106 |
| 2011-02-24 | $83.26 | $58.92 | 31 |
| 2011-02-23 | $83.26 | $58.26 | 108 |
| 2011-02-21 | $83.26 | $59.08 | 34 |
| 2011-02-20 | $83.26 | $61.00 | 16 |
| 2011-02-19 | $83.26 | $60.13 | 17 |
| 2011-02-17 | $83.26 | $60.52 | 17 |
| 2011-02-15 | $83.26 | $63.19 | 16 |
| 2011-02-13 | $83.26 | $61.37 | 31 |
| 2011-02-12 | $83.26 | $61.73 | 17 |
| 2011-02-11 | $83.26 | $61.54 | 81 |
| 2011-02-09 | $83.26 | $63.26 | 17 |
| 2011-02-08 | $83.26 | $63.41 | 17 |
| 2011-02-06 | $83.26 | $63.40 | 17 |
| 2011-02-03 | $83.26 | $59.32 | 102 |
| 2011-02-01 | $83.26 | $64.62 | 33 |
| 2011-01-31 | $83.26 | $64.58 | 31 |
| 2011-01-30 | $83.26 | $64.20 | 17 |
| 2011-01-29 | $83.26 | $65.02 | 17 |
| 2011-01-28 | $83.26 | $65.10 | 203 |
| 2011-01-22 | $83.26 | $65.96 | 61 |
| 2011-01-19 | $83.26 | $66.76 | 15 |
| 2011-01-18 | $83.26 | $66.38 | 17 |
| 2011-01-17 | $83.26 | $68.07 | 16 |
| 2011-01-15 | $83.26 | $65.66 | 32 |
| 2011-01-11 | $83.50 | $69.47 | 84 |
| 2011-01-07 | $84.44 | $70.60 | 15 |
| 2011-01-05 | $84.73 | $67.19 | 76 |
| 2011-01-04 | $83.26 | $65.34 | 55 |
| 2011-01-02 | $83.26 | $69.22 | 16 |
| 2011-01-01 | $83.26 | $63.05 | 38 |
| 2010-12-31 | $83.26 | $68.35 | 17 |
| 2010-12-29 | $83.26 | $67.12 | 17 |
| 2010-12-28 | $83.26 | $66.06 | 181 |
| 2010-12-27 | $83.26 | $67.33 | 34 |
| 2010-12-26 | $83.26 | $64.96 | 34 |
| 2010-12-22 | $83.26 | $64.08 | 17 |
| 2010-12-21 | $83.26 | $63.67 | 17 |
| 2010-12-20 | $83.26 | $64.18 | 34 |
| 2010-12-17 | $83.26 | $60.52 | 34 |
| 2010-12-16 | $83.27 | $62.95 | 115 |
| 2010-12-15 | $87.78 | $63.35 | 34 |
| 2010-12-14 | $87.78 | $63.44 | 34 |
| 2010-12-13 | $87.78 | $63.35 | 32 |
| 2010-12-11 | $87.78 | $63.34 | 48 |
| 2010-12-10 | $87.78 | $61.80 | 78 |
| 2010-12-09 | $87.78 | $60.82 | 69 |
| 2010-12-08 | $87.78 | $62.88 | 32 |
| 2010-12-07 | $98.95 | $62.64 | 17 |
| 2010-12-05 | $81.60 | $60.76 | 54 |
| 2010-12-04 | $80.00 | $62.83 | 15 |
| 2010-12-03 | $80.00 | $62.10 | 15 |
| 2010-12-02 | $98.95 | $65.56 | 17 |
| 2010-12-01 | $98.95 | $62.52 | 71 |
| 2010-11-29 | $98.95 | $59.72 | 54 |
| 2010-11-26 | $98.95 | $60.74 | 55 |
| 2010-11-25 | $98.95 | $59.89 | 138 |
| 2010-11-24 | $98.95 | $61.08 | 33 |
| 2010-11-23 | $98.95 | $61.11 | 16 |
| 2010-11-21 | $98.95 | $63.05 | 16 |
| 2010-11-19 | $103.33 | $65.07 | 16 |
| 2010-11-18 | $103.33 | $63.04 | 16 |
| 2010-11-17 | $103.33 | $62.50 | 32 |
| 2010-11-16 | $103.33 | $62.74 | 48 |
| 2010-11-15 | $103.33 | $62.18 | 31 |
| 2010-11-10 | $103.33 | $61.27 | 15 |
| 2010-11-09 | $103.33 | $58.24 | 66 |
| 2010-11-06 | $103.33 | $61.46 | 15 |
| 2010-11-05 | $103.33 | $61.36 | 64 |
| 2010-11-04 | $103.33 | $55.99 | 52 |
| 2010-11-03 | $103.33 | $60.36 | 30 |
| 2010-11-01 | $103.33 | $60.99 | 45 |
| 2010-10-31 | $103.33 | $60.43 | 30 |
| 2010-10-28 | $103.33 | $59.67 | 30 |
| 2010-10-17 | $103.33 | $56.43 | 16 |
| 2010-10-14 | $103.33 | $55.71 | 46 |
| 2010-10-12 | $87.78 | $53.20 | 15 |
| 2010-10-11 | $103.33 | $58.08 | 16 |
| 2010-10-06 | $103.33 | $61.19 | 48 |
| 2010-10-05 | $103.33 | $62.45 | 32 |
| 2010-10-04 | $103.33 | $63.72 | 44 |
| 2010-09-29 | $103.33 | $68.81 | 16 |
| 2010-09-25 | $103.33 | $65.79 | 16 |
| 2010-09-14 | $103.33 | $64.66 | 16 |
| 2010-09-06 | $103.33 | $62.39 | 17 |
| 2010-09-05 | $103.33 | $60.97 | 63 |
| 2010-08-31 | $103.33 | $62.26 | 17 |
| 2010-08-30 | $103.33 | $63.42 | 17 |
| 2010-08-29 | $103.33 | $63.38 | 17 |
| 2010-08-23 | $103.33 | $70.95 | 16 |
| 2010-08-22 | $103.33 | $69.68 | 48 |
| 2010-08-20 | $103.33 | $71.63 | 124 |
| 2010-08-19 | $103.33 | $71.05 | 18 |
| 2010-08-17 | $103.33 | $72.18 | 17 |
| 2010-08-13 | $103.33 | $68.78 | 18 |
| 2010-08-12 | $103.33 | $66.07 | 91 |
| 2010-08-11 | $103.33 | $67.40 | 18 |
| 2010-08-08 | $103.33 | $69.25 | 108 |
| 2010-08-03 | $98.99 | $65.70 | 15 |
| 2010-08-01 | $97.81 | $67.00 | 16 |
| 2010-07-29 | $96.98 | $68.97 | 15 |
| 2010-07-25 | $96.95 | $63.58 | 16 |
| 2010-07-24 | $96.95 | $63.58 | 16 |
| 2010-07-23 | $96.95 | $62.60 | 17 |
| 2010-07-22 | $96.95 | $61.85 | 18 |
| 2010-07-18 | $96.95 | $61.79 | 36 |
| 2010-07-12 | $96.95 | $60.93 | 36 |
| 2010-07-06 | $94.83 | $59.96 | 35 |
| 2010-06-21 | $90.80 | $61.98 | 34 |
| 2010-06-20 | $90.80 | $62.16 | 17 |
| 2010-06-14 | $90.80 | $62.33 | 17 |
| 2010-06-13 | $90.80 | $60.15 | 70 |
| 2010-06-07 | $90.80 | $63.19 | 17 |
| 2010-05-31 | $81.63 | $58.24 | 17 |
| 2010-05-30 | $81.62 | $57.68 | 17 |
| 2010-05-24 | $81.50 | $61.81 | 72 |
| 2010-05-23 | $81.01 | $60.62 | 17 |
| 2010-05-13 | $77.72 | $56.79 | 51 |
| 2010-05-11 | $77.72 | $57.50 | 48 |
| 2010-05-08 | $72.88 | $57.53 | 15 |
| 2010-05-07 | $72.88 | $58.28 | 28 |
| 2010-04-30 | $72.55 | $54.64 | 12 |
| 2010-04-17 | $77.72 | $56.87 | 53 |
| 2010-04-15 | $71.77 | $56.53 | 52 |
| 2010-04-14 | $77.72 | $57.77 | 27 |
| 2010-04-06 | $77.72 | $60.85 | 56 |
| 2010-04-04 | $77.72 | $59.79 | 28 |
| 2010-04-02 | $77.72 | $59.96 | 28 |
| 2010-03-23 | $77.72 | $58.63 | 58 |
| 2010-03-21 | $77.72 | $58.53 | 28 |
| 2010-03-10 | $77.72 | $57.30 | 58 |
| 2010-02-25 | $76.49 | $56.16 | 58 |
| 2010-01-16 | $80.39 | $62.10 | 28 |
| 2010-01-02 | $82.92 | $61.98 | 58 |
| 2009-12-21 | $77.87 | $59.98 | 88 |
| 2009-12-19 | $76.49 | $59.62 | 62 |
| 2009-12-17 | $76.49 | $57.84 | 122 |
| 2009-12-13 | $77.31 | $57.54 | 31 |
| 2009-12-10 | $76.49 | $57.77 | 30 |
| 2009-12-07 | $76.49 | $57.42 | 34 |
| 2009-12-03 | $76.53 | $55.61 | 33 |
| 2009-12-01 | $80.44 | $57.79 | 133 |
| 2009-11-27 | $106.00 | $58.06 | 99 |
| 2009-11-17 | $106.00 | $53.81 | 94 |
| 2009-11-04 | $120.58 | $59.51 | 32 |
| 2009-10-03 | $76.49 | $60.09 | 29 |
| 2009-10-02 | $76.49 | $59.96 | 30 |
| 2009-09-01 | $79.70 | $62.64 | 31 |
| 2009-07-26 | $81.03 | $57.03 | 30 |
| 2009-04-25 | $67.83 | $48.54 | 31 |