| Month | Curve |
|---|---|
| 3/13 | -1.82 |
| 4/13 | -2.53 |
| 5/13 | -2.37 |
| 6/13 | -1.04 |
| 7/13 | -0.81 |
| 8/13 | -2.05 |
| 9/13 | -2.46 |
| Month | Curve | 4/14 | -0.46 |
| 5/14 | -0.37 |
| 6/14 | -0.61 |
| 7/14 | -0.47 |
| 8/14 | -1.06 |
| 9/14 | 0.08 |
| Month | Curve | 4/15 | -0.10 |
| 5/15 | 0.08 |
| 6/15 | -0.46 |
| 7/15 | 0.34 |
| 8/15 | 0.40 |
| 9/15 | -0.44 |
| 10/15 | 0.36 |
| Month | Curve | 4/16 | -1.30 |
| 5/16 | -0.93 |
| 6/16 | -0.21 |
| 7/16 | -0.40 |
| 8/16 | -0.50 |
| 9/16 | -1.16 |
| 10/16 | 0.07 |
| Month | Curve | 4/17 | -0.03 |
| 5/17 | -0.33 |
| 6/17 | -0.17 |