| May 14, 2008 - 1.98% | |||
| May 21, 2008 - 2.05% | |||
| May 28, 2008 - 2.19% | |||
| June 4, 2008 - 2.13% | |||
| June 11, 2008 - 2.11% | |||
| June 18, 2008 - 2.11% | |||
| June 25, 2008 - 2.11% | |||
| July 2, 2008 - 2.11% | |||
| July 9, 2008 - 2.13% | |||
| July 16, 2008 - 2.15% | |||
| July 23, 2008 - 2.13% | |||
| July 30, 2008 - 2.09% | |||
| August 6, 2008 - 2.07% | |||
| August 13, 2008 - 2.00% | |||
| August 20, 2008 - 1.94% | |||
| August 27, 2008 - 1.90% | |||
| September 3, 2008 - 1.90% | |||
| September 10, 2008 - 1.90% | |||
| September 18, 2008 - 1.86% | |||
| September 24, 2008 - 1.84% | |||
| October 1, 2008 - 1.84% | |||
| October 8, 2008 - 1.79% | |||
| October 15, 2008 - 1.73% | |||
| October 22, 2008 - 1.65% | |||
| October 29, 2008 - 1.56% | |||
| November 6, 2008 - 1.50% | |||
| November 12, 2008 - 1.44% | |||
| November 20, 2008 - 1.37% | |||
| November 26, 2008 - 1.31% | |||
| December 3, 2008 - 1.29% | |||
| December 11, 2008 - 1.25% | |||
| December 17, 2008 - 1.20% | |||