| United States Treasury Notes 3.5%
| - | 2.23% | - | - | 272,537,000 |
| United States Treasury Notes 4.625%
| - | 1.50% | - | - | 180,517,000 |
| United States Treasury Notes 3.75%
| - | 1.44% | - | - | 173,982,000 |
| United States Treasury Notes 3.875%
| - | 1.42% | - | - | 172,111,000 |
| United States Treasury Notes 3.5%
| - | 1.42% | - | - | 174,165,000 |
| United States Treasury Notes 3.375%
| - | 1.42% | - | - | 173,178,000 |
| United States Treasury Notes 3.75%
| - | 1.41% | - | - | 173,418,000 |
| United States Treasury Notes 3.375%
| - | 1.40% | - | - | 169,964,000 |
| United States Treasury Notes 3.625%
| - | 1.39% | - | - | 169,028,000 |
| United States Treasury Notes 3.5%
| - | 1.36% | - | - | 167,520,000 |