| United States Treasury Bonds 4.75%
| - | 4.18% | - | - | 239,578,000 |
| United States Treasury Bonds 4.75%
| - | 4.12% | - | - | 239,148,000 |
| United States Treasury Bonds 4.625%
| - | 4.09% | - | - | 239,636,000 |
| United States Treasury Bonds 4.625%
| - | 4.09% | - | - | 239,162,000 |
| United States Treasury Bonds 4.625%
| - | 4.04% | - | - | 239,623,000 |
| United States Treasury Bonds 4.75%
| - | 4.02% | - | - | 233,002,000 |
| United States Treasury Bonds 4.5%
| - | 4.01% | - | - | 239,632,000 |
| United States Treasury Bonds 4.75%
| - | 4.00% | - | - | 229,223,000 |
| United States Treasury Bonds 4.25%
| - | 3.80% | - | - | 239,650,000 |
| United States Treasury Bonds 4.25%
| - | 3.80% | - | - | 239,602,000 |