| United States Treasury Bonds 4.75%
| - | 4.33% | - | - | 230,451,000 |
| United States Treasury Bonds 4.75%
| - | 4.28% | - | - | 230,470,000 |
| United States Treasury Bonds 4.625%
| - | 4.25% | - | - | 230,485,000 |
| United States Treasury Bonds 4.625%
| - | 4.20% | - | - | 230,529,000 |
| United States Treasury Bonds 4.5%
| - | 4.11% | - | - | 230,524,000 |
| United States Treasury Bonds 4.75%
| - | 4.09% | - | - | 220,474,000 |
| United States Treasury Bonds 4.25%
| - | 3.99% | - | - | 230,532,000 |
| United States Treasury Bonds 4.25%
| - | 3.99% | - | - | 230,525,000 |
| United States Treasury Bonds 4.125%
| - | 3.56% | - | - | 210,372,000 |
| United States Treasury Bonds 4%
| - | 3.16% | - | - | 192,569,000 |