| United States Treasury Bonds 4.75%
| - | 4.18% | - | - | 244,708,000 |
| United States Treasury Bonds 4.75%
| - | 4.13% | - | - | 244,775,000 |
| United States Treasury Bonds 4.625%
| - | 4.09% | - | - | 244,813,000 |
| United States Treasury Bonds 4.625%
| - | 4.04% | - | - | 244,826,000 |
| United States Treasury Bonds 4.625%
| - | 3.98% | - | - | 240,357,000 |
| United States Treasury Bonds 4.75%
| - | 3.97% | - | - | 232,104,000 |
| United States Treasury Bonds 4.5%
| - | 3.96% | - | - | 244,840,000 |
| United States Treasury Bonds 4.75%
| - | 3.95% | - | - | 234,788,000 |
| United States Treasury Bonds 4.25%
| - | 3.85% | - | - | 244,847,000 |
| United States Treasury Bonds 4.25%
| - | 3.84% | - | - | 244,799,000 |