| United States Treasury Bonds 4.75%
| - | 4.39% | - | - | 247,735,000 |
| United States Treasury Bonds 4.75%
| - | 4.34% | - | - | 247,972,000 |
| United States Treasury Bonds 4.625%
| - | 4.30% | - | - | 247,960,000 |
| United States Treasury Bonds 4.625%
| - | 4.25% | - | - | 248,014,000 |
| United States Treasury Bonds 4.5%
| - | 4.16% | - | - | 248,036,000 |
| United States Treasury Bonds 4.75%
| - | 4.14% | - | - | 237,227,000 |
| United States Treasury Bonds 4.25%
| - | 4.04% | - | - | 248,017,000 |
| United States Treasury Bonds 4.25%
| - | 4.04% | - | - | 248,035,000 |
| United States Treasury Bonds 4.125%
| - | 3.61% | - | - | 226,484,000 |
| United States Treasury Bonds 4%
| - | 3.19% | - | - | 206,914,000 |