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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2011 | 13.07 | 13.57 | 13.04 | 13.54 | 12.97 | 13.47 | 12.95 | 13.2 | 13 | 13.25 | 13.05 | 13.55 | 13.1 | 13.6 |
| Sep 29, 2011 | 13.06 | 13.56 | 13.05 | 13.55 | 13.03 | 13.53 | 13 | 13.25 | 13.06 | 13.31 | 13.11 | 13.61 | 13.16 | 13.66 |
| Sep 28, 2011 | 13.05 | 13.55 | 13.05 | 13.55 | 13.03 | 13.53 | 13.01 | 13.26 | 13.07 | 13.32 | 13.13 | 13.63 | 13.18 | 13.68 |
| Sep 27, 2011 | 13.05 | 13.55 | 13.06 | 13.56 | 13.04 | 13.54 | 13.05 | 13.3 | 13.11 | 13.36 | 13.14 | 13.64 | 13.19 | 13.69 |
| Sep 26, 2011 | 13.04 | 13.54 | 13.05 | 13.55 | 13.04 | 13.54 | 13.05 | 13.3 | 13.1 | 13.35 | 13.14 | 13.64 | 13.19 | 13.69 |
| Sep 24, 2011 | 13.04 | 13.54 | 13.05 | 13.55 | 13.03 | 13.53 | 13.06 | 13.31 | 13.11 | 13.36 | 13.15 | 13.65 | 13.18 | 13.68 |
| Sep 23, 2011 | 13.01 | 13.51 | 13.02 | 13.52 | 13.02 | 13.52 | 13.07 | 13.32 | 13.13 | 13.38 | 13.16 | 13.66 | 13.21 | 13.71 |
| Sep 22, 2011 | 13.05 | 13.55 | 13.05 | 13.55 | 13.02 | 13.52 | 13.07 | 13.32 | 13.13 | 13.38 | 13.17 | 13.67 | 13.21 | 13.71 |
| Sep 21, 2011 | 13 | 13.5 | 13 | 13.5 | 13.02 | 13.52 | 13.08 | 13.33 | 13.14 | 13.39 | 13.17 | 13.67 | 13.22 | 13.72 |
| Sep 20, 2011 | 13.01 | 13.51 | 13 | 13.5 | 13.03 | 13.53 | 13.09 | 13.34 | 13.15 | 13.4 | 13.18 | 13.68 | 13.23 | 13.73 |
| Sep 19, 2011 | 13.02 | 13.52 | 13.03 | 13.53 | 13.05 | 13.55 | 13.1 | 13.35 | 13.16 | 13.41 | 13.18 | 13.68 | 13.23 | 13.73 |
| Sep 17, 2011 | 12.99 | 13.49 | 13.01 | 13.51 | 13.05 | 13.55 | 13.09 | 13.34 | 13.15 | 13.4 | 13.18 | 13.68 | 13.23 | 13.73 |
| Sep 16, 2011 | 12.94 | 13.44 | 13 | 13.5 | 13.03 | 13.53 | 13.09 | 13.34 | 13.15 | 13.4 | 13.19 | 13.69 | 13.23 | 13.73 |
| Sep 15, 2011 | 13.05 | 13.55 | 13.05 | 13.55 | 13.04 | 13.54 | 13.09 | 13.34 | 13.15 | 13.4 | 13.19 | 13.69 | 13.23 | 13.73 |
| Sep 14, 2011 | 13.03 | 13.53 | 13.03 | 13.53 | 13.03 | 13.53 | 13.07 | 13.32 | 13.15 | 13.4 | 13.18 | 13.68 | 13.23 | 13.73 |
| Sep 13, 2011 | 13.04 | 13.54 | 13.02 | 13.52 | 13.03 | 13.53 | 13.08 | 13.33 | 13.17 | 13.42 | 13.2 | 13.7 | 13.24 | 13.74 |
| Sep 12, 2011 | 12.99 | 13.49 | 13 | 13.5 | 13.01 | 13.51 | 13.07 | 13.32 | 13.16 | 13.41 | 13.2 | 13.7 | 13.24 | 13.74 |
| Sep 10, 2011 | 13.04 | 13.54 | 13.03 | 13.53 | 13.02 | 13.52 | 13.06 | 13.31 | 13.15 | 13.4 | 13.19 | 13.69 | 13.22 | 13.72 |
| Sep 09, 2011 | 13.04 | 13.54 | 13.03 | 13.53 | 13.01 | 13.51 | 13.05 | 13.3 | 13.15 | 13.4 | 13.18 | 13.68 | 13.22 | 13.72 |
| Sep 08, 2011 | 13.05 | 13.55 | 13.05 | 13.55 | 13.03 | 13.53 | 13.05 | 13.3 | 13.15 | 13.4 | 13.18 | 13.68 | 13.22 | 13.72 |
| Sep 07, 2011 | 13.05 | 13.55 | 13.02 | 13.52 | 13.02 | 13.52 | 13.05 | 13.3 | 13.13 | 13.38 | 13.17 | 13.67 | 13.22 | 13.72 |
| Sep 06, 2011 | 13.01 | 13.51 | 13 | 13.5 | 13 | 13.5 | 13.05 | 13.3 | 13.13 | 13.38 | 13.17 | 13.67 | 13.22 | 13.72 |
| Sep 05, 2011 | 12.89 | 13.39 | 12.92 | 13.42 | 12.99 | 13.49 | 13.05 | 13.3 | 13.13 | 13.38 | 13.17 | 13.67 | 13.22 | 13.72 |