| United States Treasury Bonds 4.75%
| - | 4.12% | - | - | 241,735,000 |
| United States Treasury Bonds 4.75%
| - | 4.10% | - | - | 239,921,000 |
| United States Treasury Bonds 4.75%
| - | 4.07% | - | - | 241,908,000 |
| United States Treasury Bonds 4.625%
| - | 4.04% | - | - | 241,946,000 |
| United States Treasury Bonds 4.625%
| - | 3.99% | - | - | 241,959,000 |
| United States Treasury Bonds 4.625%
| - | 3.99% | - | - | 241,749,000 |
| United States Treasury Bonds 4.5%
| - | 3.91% | - | - | 241,973,000 |
| United States Treasury Bonds 4.75%
| - | 3.89% | - | - | 231,432,000 |
| United States Treasury Bonds 4.25%
| - | 3.79% | - | - | 241,980,000 |
| United States Treasury Bonds 4.25%
| - | 3.79% | - | - | 241,932,000 |