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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 31, 2011 | 13.25 | 13.75 | 13.19 | 13.69 | 13.16 | 13.66 | 13.25 | 13.5 | 13.49 | 13.74 | 13.59 | 14.09 | 13.7 | 14.2 |
| May 30, 2011 | 13.2 | 13.7 | 13.17 | 13.67 | 13.13 | 13.63 | 13.23 | 13.48 | 13.49 | 13.74 | 13.59 | 14.09 | 13.7 | 14.2 |
| May 28, 2011 | 13.21 | 13.71 | 13.18 | 13.68 | 13.15 | 13.65 | 13.23 | 13.48 | 13.49 | 13.74 | 13.59 | 14.09 | 13.7 | 14.2 |
| May 27, 2011 | 13.24 | 13.74 | 13.18 | 13.68 | 13.14 | 13.64 | 13.21 | 13.46 | 13.47 | 13.72 | 13.58 | 14.08 | 13.7 | 14.2 |
| May 26, 2011 | 13.2 | 13.7 | 13.15 | 13.65 | 13.11 | 13.61 | 13.17 | 13.42 | 13.45 | 13.7 | 13.58 | 14.08 | 13.7 | 14.2 |
| May 25, 2011 | 13.09 | 13.59 | 13.06 | 13.56 | 13.08 | 13.58 | 13.14 | 13.39 | 13.44 | 13.69 | 13.58 | 14.08 | 13.7 | 14.2 |
| May 24, 2011 | 13.01 | 13.51 | 13.02 | 13.52 | 13.03 | 13.53 | 13.14 | 13.39 | 13.43 | 13.68 | 13.58 | 14.08 | 13.7 | 14.2 |
| May 23, 2011 | 13.19 | 13.69 | 13.13 | 13.63 | 13.09 | 13.59 | 13.15 | 13.4 | 13.44 | 13.69 | 13.58 | 14.08 | 13.7 | 14.2 |
| May 21, 2011 | 13.19 | 13.69 | 13.11 | 13.61 | 13.06 | 13.56 | 13.14 | 13.39 | 13.44 | 13.69 | 13.58 | 14.08 | 13.69 | 14.19 |
| May 20, 2011 | 13.14 | 13.64 | 13.07 | 13.57 | 13.05 | 13.55 | 13.13 | 13.38 | 13.44 | 13.69 | 13.58 | 14.08 | 13.7 | 14.2 |
| May 19, 2011 | 13.19 | 13.69 | 13.09 | 13.59 | 13.03 | 13.53 | 13.12 | 13.37 | 13.43 | 13.68 | 13.58 | 14.08 | 13.7 | 14.2 |
| May 18, 2011 | 12.87 | 13.37 | 12.88 | 13.38 | 12.89 | 13.39 | 13.01 | 13.26 | 13.33 | 13.58 | 13.54 | 14.04 | 13.68 | 14.18 |
| May 17, 2011 | 12.95 | 13.45 | 12.9 | 13.4 | 12.9 | 13.4 | 13 | 13.25 | 13.31 | 13.56 | 13.54 | 14.04 | 13.67 | 14.17 |
| May 16, 2011 | 13.03 | 13.53 | 12.93 | 13.43 | 12.86 | 13.36 | 13 | 13.25 | 13.31 | 13.56 | 13.54 | 14.04 | 13.68 | 14.18 |
| May 14, 2011 | 12.88 | 13.38 | 12.81 | 13.31 | 12.82 | 13.32 | 12.99 | 13.24 | 13.32 | 13.57 | 13.54 | 14.04 | 13.68 | 14.18 |
| May 13, 2011 | 12.3 | 12.8 | 12.41 | 12.91 | 12.64 | 13.14 | 12.99 | 13.24 | 13.31 | 13.56 | 13.55 | 14.05 | 13.68 | 14.18 |
| May 12, 2011 | 11.92 | 12.42 | 12.18 | 12.68 | 12.49 | 12.99 | 12.97 | 13.22 | 13.31 | 13.56 | 13.54 | 14.04 | 13.68 | 14.18 |
| May 11, 2011 | 11.88 | 12.38 | 12.16 | 12.66 | 12.5 | 13 | 12.98 | 13.23 | 13.32 | 13.57 | 13.54 | 14.04 | 13.68 | 14.18 |
| May 10, 2011 | 11.91 | 12.41 | 12.19 | 12.69 | 12.5 | 13 | 12.98 | 13.23 | 13.32 | 13.57 | 13.54 | 14.04 | 13.67 | 14.17 |
| May 09, 2011 | 11.97 | 12.47 | 12.22 | 12.72 | 12.48 | 12.98 | 12.98 | 13.23 | 13.33 | 13.58 | 13.54 | 14.04 | 13.68 | 14.18 |
| May 07, 2011 | 12.26 | 12.76 | 12.35 | 12.85 | 12.53 | 13.03 | 12.99 | 13.24 | 13.34 | 13.59 | 13.54 | 14.04 | 13.67 | 14.17 |
| May 06, 2011 | 12.14 | 12.64 | 12.26 | 12.76 | 12.5 | 13 | 13 | 13.25 | 13.34 | 13.59 | 13.55 | 14.05 | 13.67 | 14.17 |
| May 05, 2011 | 11.89 | 12.39 | 12.12 | 12.62 | 12.51 | 13.01 | 13.01 | 13.26 | 13.36 | 13.61 | 13.56 | 14.06 | 13.68 | 14.18 |
| May 04, 2011 | 11.91 | 12.41 | 12.21 | 12.71 | 12.54 | 13.04 | 13.11 | 13.36 | 13.42 | 13.67 | 13.59 | 14.09 | 13.69 | 14.19 |
| May 03, 2011 | 12.12 | 12.62 | 12.33 | 12.83 | 12.65 | 13.15 | 13.13 | 13.38 | 13.42 | 13.67 | 13.58 | 14.08 | 13.7 | 14.2 |
| May 02, 2011 | 12.22 | 12.72 | 12.36 | 12.86 | 12.67 | 13.17 | 13.13 | 13.38 | 13.42 | 13.67 | 13.57 | 14.07 | 13.69 | 14.19 |