| United States Treasury Bonds 4.75%
| - | 4.28% | - | - | 232,533,000 |
| United States Treasury Bonds 4.625%
| - | 4.19% | - | - | 232,555,000 |
| United States Treasury Bonds 4.75%
| - | 4.16% | - | - | 228,598,000 |
| United States Treasury Bonds 4.625%
| - | 4.14% | - | - | 232,542,000 |
| United States Treasury Bonds 4.625%
| - | 4.12% | - | - | 228,612,000 |
| United States Treasury Bonds 4.5%
| - | 4.10% | - | - | 232,587,000 |
| United States Treasury Bonds 4.75%
| - | 4.08% | - | - | 222,468,000 |
| United States Treasury Bonds 4.25%
| - | 3.88% | - | - | 232,605,000 |
| United States Treasury Bonds 4.25%
| - | 3.88% | - | - | 232,557,000 |
| United States Treasury Bonds 4.125%
| - | 3.45% | - | - | 211,002,000 |