| United States Treasury Bonds 4.75%
| - | 4.25% | - | - | 229,836,000 |
| United States Treasury Bonds 4.75%
| - | 4.20% | - | - | 229,837,000 |
| United States Treasury Bonds 4.625%
| - | 4.16% | - | - | 229,895,000 |
| United States Treasury Bonds 4.625%
| - | 4.13% | - | - | 228,030,000 |
| United States Treasury Bonds 4.625%
| - | 4.11% | - | - | 229,862,000 |
| United States Treasury Bonds 4.5%
| - | 4.08% | - | - | 229,890,000 |
| United States Treasury Bonds 4.75%
| - | 4.06% | - | - | 220,157,000 |
| United States Treasury Bonds 4.25%
| - | 3.86% | - | - | 229,898,000 |
| United States Treasury Bonds 4.25%
| - | 3.86% | - | - | 229,880,000 |
| United States Treasury Bonds 4.125%
| - | 3.46% | - | - | 210,151,000 |