| United States Treasury Bonds 4.75%
| - | 4.30% | - | - | 227,654,000 |
| United States Treasury Bonds 4.75%
| - | 4.25% | - | - | 227,662,000 |
| United States Treasury Bonds 4.625%
| - | 4.22% | - | - | 227,688,000 |
| United States Treasury Bonds 4.625%
| - | 4.17% | - | - | 227,721,000 |
| United States Treasury Bonds 4.625%
| - | 4.08% | - | - | 223,019,000 |
| United States Treasury Bonds 4.5%
| - | 4.08% | - | - | 227,716,000 |
| United States Treasury Bonds 4.75%
| - | 4.06% | - | - | 217,781,000 |
| United States Treasury Bonds 4.25%
| - | 3.96% | - | - | 227,724,000 |
| United States Treasury Bonds 4.25%
| - | 3.96% | - | - | 227,717,000 |
| United States Treasury Bonds 4.125%
| - | 3.54% | - | - | 207,794,000 |