| United States Treasury Bonds 4.75%
| - | 4.19% | - | - | 245,848,000 |
| United States Treasury Bonds 4.75%
| - | 4.14% | - | - | 245,920,000 |
| United States Treasury Bonds 4.625%
| - | 4.10% | - | - | 245,958,000 |
| United States Treasury Bonds 4.625%
| - | 4.05% | - | - | 245,971,000 |
| United States Treasury Bonds 4.5%
| - | 3.97% | - | - | 245,985,000 |
| United States Treasury Bonds 4.75%
| - | 3.96% | - | - | 235,978,000 |
| United States Treasury Bonds 4.625%
| - | 3.96% | - | - | 240,052,000 |
| United States Treasury Bonds 4.75%
| - | 3.95% | - | - | 231,589,000 |
| United States Treasury Bonds 4.25%
| - | 3.86% | - | - | 245,992,000 |
| United States Treasury Bonds 4.25%
| - | 3.85% | - | - | 245,944,000 |