| United States Treasury Bonds 4.75%
| - | 4.17% | - | - | 237,008,000 |
| United States Treasury Bonds 4.75%
| - | 4.11% | - | - | 236,667,000 |
| United States Treasury Bonds 4.625%
| - | 4.08% | - | - | 237,066,000 |
| United States Treasury Bonds 4.625%
| - | 4.08% | - | - | 236,681,000 |
| United States Treasury Bonds 4.75%
| - | 4.05% | - | - | 233,002,000 |
| United States Treasury Bonds 4.625%
| - | 4.03% | - | - | 237,053,000 |
| United States Treasury Bonds 4.5%
| - | 4.00% | - | - | 237,062,000 |
| United States Treasury Bonds 4.75%
| - | 3.98% | - | - | 226,747,000 |
| United States Treasury Bonds 4.25%
| - | 3.79% | - | - | 237,080,000 |
| United States Treasury Bonds 4.25%
| - | 3.79% | - | - | 237,032,000 |