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| Date | 1 Week Bid | 1 Week Ask | 2 Week Bid | 2 Week Ask | 1 Month Bid | 1 Month Ask | 3 Month Bid | 3 Month Ask | 6 Month Bid | 6 Month Ask | 9 Month Bid | 9 Month Ask | 1 Year Bid | 1 Year Ask |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb 28, 2011 | 12.64 | 13.14 | 12.71 | 13.21 | 12.79 | 13.29 | 13.34 | 13.59 | 13.51 | 13.76 | 13.63 | 14.13 | 13.75 | 14.25 |
| Feb 26, 2011 | 12.73 | 13.23 | 12.79 | 13.29 | 12.83 | 13.33 | 13.35 | 13.6 | 13.51 | 13.76 | 13.64 | 14.14 | 13.75 | 14.25 |
| Feb 25, 2011 | 12.73 | 13.23 | 12.79 | 13.29 | 12.83 | 13.33 | 13.35 | 13.6 | 13.51 | 13.76 | 13.64 | 14.14 | 13.75 | 14.25 |
| Feb 24, 2011 | 12.87 | 13.37 | 12.87 | 13.37 | 12.86 | 13.36 | 13.34 | 13.59 | 13.5 | 13.75 | 13.63 | 14.13 | 13.74 | 14.24 |
| Feb 23, 2011 | 12.78 | 13.28 | 12.8 | 13.3 | 12.82 | 13.32 | 13.36 | 13.61 | 13.51 | 13.76 | 13.64 | 14.14 | 13.75 | 14.25 |
| Feb 22, 2011 | 12.27 | 12.77 | 12.57 | 13.07 | 12.73 | 13.23 | 13.35 | 13.6 | 13.51 | 13.76 | 13.63 | 14.13 | 13.75 | 14.25 |
| Feb 21, 2011 | 12.12 | 12.62 | 12.48 | 12.98 | 12.7 | 13.2 | 13.34 | 13.59 | 13.5 | 13.75 | 13.64 | 14.14 | 13.75 | 14.25 |
| Feb 19, 2011 | 12.07 | 12.57 | 12.43 | 12.93 | 12.69 | 13.19 | 13.36 | 13.61 | 13.51 | 13.76 | 13.64 | 14.14 | 13.75 | 14.25 |
| Feb 18, 2011 | 12.49 | 12.99 | 12.67 | 13.17 | 12.79 | 13.29 | 13.38 | 13.63 | 13.51 | 13.76 | 13.64 | 14.14 | 13.76 | 14.26 |
| Feb 17, 2011 | 12.82 | 13.32 | 12.82 | 13.32 | 12.84 | 13.34 | 13.38 | 13.63 | 13.51 | 13.76 | 13.64 | 14.14 | 13.76 | 14.26 |
| Feb 15, 2011 | 12.44 | 12.94 | 12.61 | 13.11 | 12.78 | 13.28 | 13.37 | 13.62 | 13.51 | 13.76 | 13.64 | 14.14 | 13.76 | 14.26 |
| Feb 14, 2011 | 12.22 | 12.72 | 12.51 | 13.01 | 12.74 | 13.24 | 13.37 | 13.62 | 13.51 | 13.76 | 13.64 | 14.14 | 13.76 | 14.26 |
| Feb 12, 2011 | 12.73 | 13.23 | 12.79 | 13.29 | 12.85 | 13.35 | 13.37 | 13.62 | 13.52 | 13.77 | 13.64 | 14.14 | 13.76 | 14.26 |
| Feb 11, 2011 | 12.84 | 13.34 | 12.86 | 13.36 | 12.86 | 13.36 | 13.37 | 13.62 | 13.51 | 13.76 | 13.63 | 14.13 | 13.76 | 14.26 |
| Feb 10, 2011 | 12.77 | 13.27 | 12.82 | 13.32 | 12.86 | 13.36 | 13.38 | 13.63 | 13.52 | 13.77 | 13.63 | 14.13 | 13.75 | 14.25 |
| Feb 09, 2011 | 12.37 | 12.87 | 12.61 | 13.11 | 12.76 | 13.26 | 13.38 | 13.63 | 13.51 | 13.76 | 13.63 | 14.13 | 13.76 | 14.26 |
| Feb 08, 2011 | 12.07 | 12.57 | 12.41 | 12.91 | 12.69 | 13.19 | 13.37 | 13.62 | 13.51 | 13.76 | 13.64 | 14.14 | 13.76 | 14.26 |
| Feb 07, 2011 | 12.08 | 12.58 | 12.42 | 12.92 | 12.68 | 13.18 | 13.38 | 13.63 | 13.51 | 13.76 | 13.63 | 14.13 | 13.76 | 14.26 |
| Feb 04, 2011 | 12.2 | 12.7 | 12.45 | 12.95 | 12.71 | 13.21 | 13.36 | 13.61 | 13.51 | 13.76 | 13.63 | 14.13 | 13.77 | 14.27 |
| Feb 03, 2011 | 12.08 | 12.58 | 12.39 | 12.89 | 12.7 | 13.2 | 13.38 | 13.63 | 13.52 | 13.77 | 13.64 | 14.14 | 13.77 | 14.27 |
| Feb 02, 2011 | 12.26 | 12.76 | 12.5 | 13 | 12.75 | 13.25 | 13.4 | 13.65 | 13.54 | 13.79 | 13.66 | 14.16 | 13.78 | 14.28 |
| Feb 01, 2011 | 12.53 | 13.03 | 12.66 | 13.16 | 12.79 | 13.29 | 13.43 | 13.68 | 13.57 | 13.82 | 13.67 | 14.17 | 13.78 | 14.28 |