| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2010 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 30 | 31 |
| 2011 | 107 | 28 | 20 | 14 | 27 | 29 | 24 | 22 | 7 | 27 | 24 | 28 |
| 2012 | 155 | 101 | 60 | 13 | 0 | 6 | 4 | 28 | 48 | 7 | 3 | 3 |
| 2013 | 15 | 5 | 21 | 16 | 39 | 19 | 16 | 20 | 3 | 61 | 49 | 13 |
| 2014 | 30 | 20 | 14 | 19 | 19 | 12 | 4 | 6 | 2 | 3 | 3 | 2 |
| 2015 | 27 | 3 | 2 | 1 | 5 | 4 | 1 | 4 | 4 | 2 | 3 | 0 |
| 2016 | 2 | 1 | 4 | 1 | 1 | 3 | 2 | 2 | 1 | 1 | 0 | 0 |
| 2017 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| 2018 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |