| United States Treasury Bonds 4.75%
| - | 4.33% | - | - | 229,471,000 |
| United States Treasury Bonds 4.75%
| - | 4.28% | - | - | 229,490,000 |
| United States Treasury Bonds 4.625%
| - | 4.24% | - | - | 229,505,000 |
| United States Treasury Bonds 4.625%
| - | 4.19% | - | - | 229,549,000 |
| United States Treasury Bonds 4.5%
| - | 4.11% | - | - | 229,544,000 |
| United States Treasury Bonds 4.75%
| - | 4.09% | - | - | 219,534,000 |
| United States Treasury Bonds 4.25%
| - | 3.98% | - | - | 229,552,000 |
| United States Treasury Bonds 4.25%
| - | 3.98% | - | - | 229,545,000 |
| United States Treasury Bonds 4.125%
| - | 3.56% | - | - | 209,472,000 |
| United States Treasury Bonds 4%
| - | 3.17% | - | - | 192,569,000 |