| Month | Curve |
|---|---|
| 6/10 | -2.25 |
| 7/10 | -2.25 |
| 8/10 | -1.97 |
| 9/10 | -1.88 |
| Month | Curve | 4/11 | -2.22 |
| 5/11 | -2.21 |
| 6/11 | -2.23 |
| 7/11 | -2.39 |
| Month | Curve | 4/12 | -2.27 |
| 5/12 | -2.27 |
| 6/12 | -2.48 |
| 7/12 | -2.03 |
| 9/12 | -2.93 |
| 10/12 | -2.75 |
| Month | Curve | 4/13 | -2.49 |
| 6/13 | -2.51 |
| 7/13 | -2.63 |
| 8/13 | -2.73 |
| 9/13 | -2.78 |
| Month | Curve | 5/14 | -2.98 |
| 6/14 | -3.00 |
| 7/14 | -3.03 |
| 8/14 | -3.07 |
| 9/14 | -2.94 |
| Month | Curve | 4/15 | -3.30 |
| 5/15 | -3.27 |
| 6/15 | -3.26 |
| 7/15 | -3.24 |
| 8/15 | -3.33 |