| United States Treasury Bonds 4.75%
| - | 4.35% | - | - | 246,281,000 |
| United States Treasury Bonds 4.75%
| - | 4.30% | - | - | 246,392,000 |
| United States Treasury Bonds 4.625%
| - | 4.26% | - | - | 246,407,000 |
| United States Treasury Bonds 4.625%
| - | 4.21% | - | - | 246,461,000 |
| United States Treasury Bonds 4.5%
| - | 4.13% | - | - | 246,456,000 |
| United States Treasury Bonds 4.75%
| - | 4.11% | - | - | 235,716,000 |
| United States Treasury Bonds 4.25%
| - | 4.00% | - | - | 246,464,000 |
| United States Treasury Bonds 4.25%
| - | 4.00% | - | - | 246,447,000 |
| United States Treasury Bonds 4.125%
| - | 3.58% | - | - | 224,969,000 |
| United States Treasury Bonds 4%
| - | 3.15% | - | - | 204,741,000 |