| Month | Curve |
|---|---|
| 6/10 | -49.84 |
| 7/10 | -53.76 |
| 8/10 | -54.77 |
| 9/10 | -54.57 |
| Month | Curve | 4/11 | -54.46 |
| 5/11 | -55.15 |
| 6/11 | -54.15 |
| 7/11 | -56.25 |
| Month | Curve | 4/12 | -55.32 |
| 5/12 | -56.99 |
| 6/12 | -56.82 |
| 7/12 | -57.70 |
| 9/12 | -52.67 |
| 10/12 | -55.03 |
| Month | Curve | 4/13 | -50.67 |
| 6/13 | -49.76 |
| 7/13 | -47.78 |
| 8/13 | -50.46 |
| 9/13 | -51.64 |
| Month | Curve | 5/14 | -53.06 |
| 6/14 | -54.66 |
| 7/14 | -54.14 |
| 8/14 | -53.75 |
| 9/14 | -54.49 |
| Month | Curve | 4/15 | -54.67 |
| 5/15 | -53.73 |
| 6/15 | -52.62 |
| 7/15 | -52.30 |
| 8/15 | -51.38 |