| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2018 | 14 | 4 | 2 | 4 | 1 | 1 | 2 | ||||||
| 2017 | 20 | 2 | 1 | 7 | 2 | 2 | 2 | 2 | 1 | 1 | |||
| 2016 | 68 | 14 | 13 | 16 | 11 | 1 | 1 | 4 | 3 | 5 | |||
| 2015 | 174 | 7 | 14 | 18 | 17 | 17 | 18 | 8 | 11 | 15 | 14 | 18 | 17 |
| 2014 | 159 | 19 | 14 | 16 | 16 | 18 | 20 | 19 | 9 | 2 | 13 | 13 | |
| 2013 | 202 | 14 | 15 | 27 | 13 | 19 | 20 | 18 | 11 | 14 | 16 | 16 | 19 |
| 2012 | 132 | 12 | 7 | 6 | 5 | 8 | 13 | 9 | 12 | 12 | 18 | 17 | 13 |
| 2011 | 3 | 3 | |||||||||||
| 2010 | 47 | 6 | 6 | 9 | 6 | 8 | 1 | 6 | 5 | ||||
| 2009 | 32 | 4 | 6 | 1 | 1 | 4 | 7 | 6 | 3 | ||||
| 2008 | 7 | 1 | 1 | 3 | 2 | ||||||||
| 2007 | 5 | 3 | 2 | ||||||||||
| 2006 | 31 | 3 | 2 | 5 | 1 | 1 | 2 | 6 | 3 | 5 | 3 | ||
| 2005 | 14 | 4 | 4 | 3 | 3 | ||||||||
| 908 |