| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2019 | 5 | 1 | 1 | 1 | 1 | 1 | |||||||
| 2018 | 17 | 3 | 1 | 1 | 3 | 1 | 3 | 1 | 1 | 2 | 1 | ||
| 2017 | 5 | 1 | 1 | 1 | 1 | 1 | |||||||
| 2016 | 17 | 2 | 3 | 2 | 2 | 1 | 1 | 3 | 1 | 1 | 1 | ||
| 2015 | 24 | 4 | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 3 | 2 | 3 |
| 2014 | 30 | 1 | 5 | 2 | 6 | 6 | 3 | 2 | 4 | 1 | |||
| 2013 | 1 | 1 | |||||||||||
| 2012 | 20 | 1 | 1 | 2 | 5 | 2 | 6 | 1 | 1 | 1 | |||
| 2011 | 46 | 2 | 4 | 5 | 7 | 4 | 7 | 5 | 5 | 5 | 2 | ||
| 2010 | 34 | 4 | 3 | 2 | 1 | 2 | 3 | 3 | 4 | 4 | 7 | 1 | |
| 2009 | 27 | 3 | 4 | 7 | 2 | 2 | 2 | 6 | 1 | ||||
| 2008 | 26 | 1 | 4 | 1 | 5 | 2 | 2 | 3 | 3 | 2 | 3 | ||
| 2007 | 55 | 3 | 2 | 6 | 7 | 10 | 5 | 4 | 6 | 3 | 3 | 4 | 2 |
| 2006 | 37 | 3 | 3 | 1 | 5 | 3 | 6 | 4 | 3 | 4 | 2 | 3 | |
| 2005 | 35 | 4 | 2 | 2 | 4 | 3 | 5 | 2 | 4 | 5 | 1 | 2 | 1 |
| 2004 | 12 | 1 | 2 | 3 | 1 | 1 | 4 | ||||||
| 2003 | 2 | 1 | 1 | ||||||||||
| 2002 | 4 | 1 | 1 | 1 | 1 | ||||||||
| 397 |
