| United States Treasury Bonds 4.75%
| - | 4.36% | - | - | 246,835,000 |
| United States Treasury Bonds 4.75%
| - | 4.31% | - | - | 247,009,000 |
| United States Treasury Bonds 4.625%
| - | 4.28% | - | - | 247,024,000 |
| United States Treasury Bonds 4.625%
| - | 4.23% | - | - | 247,078,000 |
| United States Treasury Bonds 4.5%
| - | 4.14% | - | - | 247,073,000 |
| United States Treasury Bonds 4.75%
| - | 4.12% | - | - | 236,327,000 |
| United States Treasury Bonds 4.25%
| - | 4.01% | - | - | 247,081,000 |
| United States Treasury Bonds 4.25%
| - | 4.01% | - | - | 247,064,000 |
| United States Treasury Bonds 4.125%
| - | 3.59% | - | - | 225,584,000 |
| United States Treasury Bonds 4%
| - | 3.17% | - | - | 205,770,000 |