| United States Treasury Bonds 4.625%
| - | 4.60% | - | - | 258,437,000 |
| United States Treasury Bonds 4.625%
| - | 4.54% | - | - | 258,803,000 |
| United States Treasury Bonds 4.5%
| - | 4.46% | - | - | 259,250,000 |
| United States Treasury Bonds 4.75%
| - | 4.45% | - | - | 248,429,000 |
| United States Treasury Bonds 4.25%
| - | 4.32% | - | - | 258,808,000 |
| United States Treasury Bonds 4.25%
| - | 4.31% | - | - | 258,752,000 |
| United States Treasury Bonds 4.125%
| - | 3.85% | - | - | 236,168,000 |
| United States Treasury Bonds 4%
| - | 3.37% | - | - | 213,228,000 |
| United States Treasury Bonds 2.375%
| - | 3.19% | - | - | 279,451,000 |
| United States Treasury Bonds 3.625%
| - | 3.17% | - | - | 212,722,000 |