| United States Treasury Bonds 4.75%
| - | 4.25% | - | - | 234,796,000 |
| United States Treasury Bonds 4.75%
| - | 4.16% | - | - | 232,750,000 |
| United States Treasury Bonds 4.625%
| - | 4.16% | - | - | 234,818,000 |
| United States Treasury Bonds 4.625%
| - | 4.13% | - | - | 232,764,000 |
| United States Treasury Bonds 4.625%
| - | 4.11% | - | - | 234,805,000 |
| United States Treasury Bonds 4.5%
| - | 4.08% | - | - | 234,850,000 |
| United States Treasury Bonds 4.75%
| - | 4.06% | - | - | 224,653,000 |
| United States Treasury Bonds 4.25%
| - | 3.86% | - | - | 234,820,000 |
| United States Treasury Bonds 4.25%
| - | 3.86% | - | - | 234,868,000 |
| United States Treasury Bonds 4.125%
| - | 3.45% | - | - | 214,218,000 |