| Month Year | 3 | 5 | 6 | 7 | 12 | Total |
| 2011 |
| −1 |
|
|
| −1 |
| 2012 |
|
| +1 | −1 |
|
|
| 2013 |
|
|
|
| +1 | +1 |
| 2014 |
|
| +1 |
|
| +1 |
| 2015 |
|
|
|
|
|
|
| Total |
| −1 | +2 | −1 | +1 | +1 |