| United States Treasury Bonds 4.5%
| - | 5.30% | - | - | 372,700,000 |
| United States Treasury Bonds 4.625%
| - | 5.29% | - | - | 364,500,000 |
| United States Treasury Bonds 4.25%
| - | 5.05% | - | - | 371,000,000 |
| United States Treasury Bonds 4.625%
| - | 5.03% | - | - | 346,900,000 |
| United States Treasury Bonds 4.75%
| - | 5.01% | - | - | 338,300,000 |
| United States Treasury Bonds 4.25%
| - | 4.76% | - | - | 349,300,000 |
| United States Treasury Bonds 4.75%
| - | 4.17% | - | - | 282,150,000 |
| United States Treasury Bonds 4.75%
| - | 3.76% | - | - | 253,600,000 |
| United States Treasury Bonds 4.125%
| - | 3.54% | - | - | 265,550,000 |
| United States Treasury Bonds 3.625%
| - | 2.96% | - | - | 243,150,000 |