| United States Treasury Bonds 4.75%
| - | 4.38% | - | - | 246,580,000 |
| United States Treasury Bonds 4.75%
| - | 4.34% | - | - | 246,895,000 |
| United States Treasury Bonds 4.625%
| - | 4.30% | - | - | 246,883,000 |
| United States Treasury Bonds 4.625%
| - | 4.25% | - | - | 246,937,000 |
| United States Treasury Bonds 4.5%
| - | 4.16% | - | - | 246,959,000 |
| United States Treasury Bonds 4.75%
| - | 4.14% | - | - | 236,192,000 |
| United States Treasury Bonds 4.25%
| - | 4.04% | - | - | 246,940,000 |
| United States Treasury Bonds 4.25%
| - | 4.04% | - | - | 246,958,000 |
| United States Treasury Bonds 4.125%
| - | 3.61% | - | - | 225,551,000 |
| United States Treasury Bonds 4%
| - | 3.20% | - | - | 206,587,000 |