| United States Treasury Notes 3.5%
| - | 2.25% | - | - | 272,667,000 |
| United States Treasury Notes 4.5%
| - | 1.51% | - | - | 181,090,000 |
| United States Treasury Notes 4.625%
| - | 1.45% | - | - | 172,567,000 |
| United States Treasury Notes 3.375%
| - | 1.41% | - | - | 171,223,000 |
| United States Treasury Notes 3.5%
| - | 1.41% | - | - | 171,451,000 |
| United States Treasury Notes 3.75%
| - | 1.41% | - | - | 171,318,000 |
| United States Treasury Notes 3.5%
| - | 1.40% | - | - | 170,539,000 |
| United States Treasury Notes 3.375%
| - | 1.39% | - | - | 170,649,000 |
| United States Treasury Notes 3.625%
| - | 1.38% | - | - | 166,685,000 |
| United States Treasury Notes 4.125%
| - | 1.35% | - | - | 163,231,000 |