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| Date | Max Price | Avg Price | # Prices |
|---|---|---|---|
| 2012-01-28 | $4.06 | $3.22 | 18 |
| 2012-01-27 | $4.03 | $2.50 | 5 |
| 2012-01-24 | $1.69 | $1.53 | 6 |
| 2012-01-21 | $2.94 | $2.30 | 2 |
| 2012-01-18 | $1.69 | $1.41 | 4 |
| 2012-01-17 | $1.69 | $1.32 | 3 |
| 2012-01-13 | $1.00 | $1.00 | 1 |
| 2012-01-10 | $1.00 | $1.00 | 1 |
| 2012-01-06 | $1.08 | $1.04 | 2 |
| 2011-10-13 | $1.79 | $1.40 | 4 |
| 2011-10-12 | $1.34 | $1.34 | 1 |
| 2011-09-15 | $1.00 | $1.00 | 1 |
| 2011-09-04 | $1.06 | $1.02 | 4 |
| 2011-09-02 | $8.25 | $2.87 | 4 |
| 2011-08-31 | $8.25 | $3.57 | 6 |
| 2011-08-27 | $8.25 | $5.84 | 3 |
| 2011-08-22 | $8.25 | $5.91 | 3 |
| 2011-08-14 | $8.25 | $4.18 | 5 |
| 2011-08-05 | $8.25 | $3.14 | 4 |
| 2011-08-01 | $8.25 | $2.69 | 5 |
| 2011-07-26 | $2.24 | $1.61 | 14 |
| 2011-07-20 | $8.25 | $3.97 | 3 |
| 2011-07-17 | $8.25 | $4.21 | 3 |
| 2011-07-16 | $8.25 | $3.50 | 4 |
| 2011-07-13 | $8.25 | $3.25 | 15 |
| 2011-07-10 | $8.25 | $3.71 | 12 |
| 2011-07-09 | $8.25 | $8.25 | 1 |
| 2011-07-06 | $8.25 | $3.90 | 9 |
| 2011-07-04 | $8.25 | $5.62 | 4 |
| 2011-06-30 | $8.25 | $5.38 | 8 |
| 2011-06-26 | $8.25 | $3.70 | 11 |
| 2011-06-20 | $2.00 | $2.00 | 1 |
| 2011-06-18 | $1.02 | $1.01 | 2 |
| 2011-06-17 | $1.12 | $1.05 | 14 |
| 2011-06-10 | $8.25 | $8.25 | 1 |
| 2011-06-07 | $8.25 | $8.25 | 1 |
| 2011-06-05 | $8.25 | $8.25 | 1 |
| 2011-06-04 | $8.25 | $5.14 | 7 |
| 2011-06-03 | $8.25 | $4.62 | 4 |
| 2011-06-02 | $8.25 | $8.25 | 1 |
| 2011-06-01 | $8.25 | $8.25 | 1 |
| 2011-05-31 | $8.25 | $8.25 | 1 |
| 2011-05-29 | $8.25 | $8.25 | 5 |
| 2011-05-28 | $8.25 | $8.25 | 3 |
| 2011-05-27 | $8.25 | $8.25 | 3 |
| 2011-05-23 | $8.25 | $6.75 | 7 |
| 2011-05-18 | $8.25 | $6.94 | 4 |
| 2011-05-17 | $8.25 | $6.94 | 4 |
| 2011-05-13 | $8.25 | $4.95 | 11 |
| 2011-05-12 | $8.25 | $4.62 | 4 |
| 2011-05-09 | $8.25 | $8.25 | 1 |
| 2011-04-28 | $1.00 | $1.00 | 1 |
| 2011-04-20 | $1.01 | $1.00 | 4 |
| 2011-04-15 | $8.00 | $4.28 | 4 |
| 2011-04-14 | $8.00 | $4.79 | 4 |
| 2011-04-09 | $6.85 | $2.73 | 5 |
| 2011-04-04 | $6.85 | $2.82 | 7 |
| 2011-04-01 | $6.85 | $3.13 | 6 |
| 2011-03-30 | $6.85 | $3.02 | 7 |
| 2011-03-24 | $6.85 | $3.23 | 6 |
| 2011-03-17 | $2.62 | $2.05 | 6 |
| 2011-03-01 | $7.50 | $3.40 | 20 |
| 2011-02-25 | $7.50 | $3.42 | 8 |
| 2011-02-02 | $15.64 | $9.88 | 22 |
| 2011-02-01 | $14.60 | $9.33 | 20 |
| 2011-01-18 | $14.87 | $7.63 | 13 |
| 2011-01-17 | $8.00 | $5.69 | 10 |
| 2011-01-16 | $9.98 | $6.31 | 24 |
| 2011-01-06 | $8.85 | $5.11 | 24 |
| 2011-01-04 | $8.00 | $4.80 | 22 |
| 2010-12-24 | $8.00 | $5.02 | 16 |
| 2010-12-18 | $8.00 | $5.25 | 9 |
| 2010-12-17 | $8.00 | $5.05 | 57 |
| 2010-12-15 | $8.00 | $4.16 | 16 |
| 2010-12-14 | $8.00 | $3.77 | 9 |
| 2010-12-13 | $8.00 | $3.55 | 9 |
| 2010-12-12 | $8.00 | $3.93 | 8 |
| 2010-12-09 | $8.00 | $4.34 | 8 |
| 2010-12-08 | $8.00 | $3.91 | 25 |
| 2010-12-07 | $8.00 | $4.48 | 7 |
| 2010-11-03 | $32.94 | $6.95 | 26 |
| 2010-10-29 | $32.94 | $8.49 | 12 |
| 2010-10-12 | $32.94 | $10.68 | 12 |
| 2010-09-28 | $32.94 | $13.83 | 21 |
| 2010-09-15 | $31.52 | $15.93 | 24 |
| 2010-09-12 | $31.52 | $13.82 | 37 |
| 2010-09-10 | $31.52 | $16.44 | 11 |
| 2010-09-08 | $31.52 | $15.13 | 13 |
| 2010-09-04 | $31.52 | $16.72 | 14 |
| 2010-09-02 | $31.52 | $15.24 | 14 |
| 2010-08-30 | $31.52 | $12.33 | 15 |
| 2010-08-25 | $31.52 | $11.52 | 45 |
| 2010-08-24 | $31.52 | $14.97 | 14 |
| 2010-08-22 | $31.52 | $16.04 | 14 |
| 2010-08-21 | $31.52 | $16.86 | 15 |
| 2010-08-20 | $31.52 | $17.79 | 29 |
| 2010-07-28 | $38.15 | $14.03 | 47 |
| 2010-07-15 | $38.15 | $13.92 | 16 |
| 2010-07-13 | $38.15 | $12.36 | 51 |
| 2010-05-23 | $38.51 | $20.44 | 18 |
| 2010-05-22 | $38.51 | $20.03 | 18 |
| 2010-05-21 | $38.51 | $20.64 | 72 |
| 2010-05-12 | $33.50 | $20.63 | 33 |
| 2010-05-10 | $33.50 | $20.62 | 17 |
| 2010-02-12 | $38.16 | $29.06 | 27 |
| 2010-01-12 | $42.00 | $28.02 | 29 |
| 2009-12-26 | $38.74 | $25.56 | 28 |
| 2009-12-18 | $38.74 | $24.49 | 29 |
| 2009-12-17 | $38.74 | $24.46 | 29 |
| 2009-07-31 | $36.14 | $24.21 | 83 |
| 2009-07-28 | $36.14 | $24.85 | 55 |
| 2009-07-26 | $39.85 | $24.44 | 56 |
| 2009-07-11 | $37.22 | $24.12 | 27 |
| 2009-07-03 | $36.54 | $22.30 | 27 |
| 2009-06-20 | $36.54 | $21.01 | 29 |
| 2009-06-14 | $35.85 | $20.52 | 29 |
| 2009-05-15 | $34.54 | $22.70 | 27 |
| 2009-04-30 | $34.78 | $23.13 | 31 |
| 2009-04-23 | $34.78 | $24.10 | 31 |