| United States Treasury Bonds 4.75%
| - | 4.25% | - | - | 229,374,000 |
| United States Treasury Bonds 4.75%
| - | 4.20% | - | - | 229,375,000 |
| United States Treasury Bonds 4.625%
| - | 4.16% | - | - | 229,433,000 |
| United States Treasury Bonds 4.625%
| - | 4.13% | - | - | 227,469,000 |
| United States Treasury Bonds 4.625%
| - | 4.11% | - | - | 229,400,000 |
| United States Treasury Bonds 4.5%
| - | 4.08% | - | - | 229,428,000 |
| United States Treasury Bonds 4.75%
| - | 4.06% | - | - | 219,739,000 |
| United States Treasury Bonds 4.25%
| - | 3.86% | - | - | 229,429,000 |
| United States Treasury Bonds 4.25%
| - | 3.86% | - | - | 229,436,000 |
| United States Treasury Bonds 4.125%
| - | 3.46% | - | - | 209,755,000 |