| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2016 | 6 | 1 | 1 | 1 | 3 | ||||||||
| 2015 | 11 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 1 | |||
| 2014 | 11 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | ||||
| 2013 | 16 | 1 | 2 | 4 | 1 | 1 | 3 | 1 | 1 | 1 | 1 | ||
| 2012 | 22 | 1 | 1 | 3 | 3 | 1 | 3 | 1 | 3 | 1 | 2 | 2 | 1 |
| 2011 | 28 | 1 | 2 | 1 | 3 | 2 | 4 | 4 | 6 | 2 | 2 | 1 | |
| 2010 | 17 | 2 | 2 | 1 | 1 | 2 | 2 | 3 | 1 | 1 | 1 | 1 | |
| 2009 | 16 | 1 | 3 | 2 | 1 | 2 | 1 | 1 | 2 | 3 | |||
| 2008 | 19 | 2 | 2 | 1 | 1 | 1 | 2 | 3 | 3 | 1 | 2 | 1 | |
| 2007 | 16 | 1 | 1 | 3 | 3 | 1 | 1 | 2 | 1 | 2 | 1 | ||
| 2006 | 20 | 2 | 1 | 2 | 1 | 2 | 1 | 1 | 2 | 1 | 3 | 2 | 2 |
| 2005 | 22 | 2 | 2 | 4 | 2 | 2 | 2 | 2 | 1 | 2 | 1 | 2 | |
| 2004 | 7 | 1 | 1 | 1 | 1 | 2 | 1 | ||||||
| 2003 | 2 | 1 | 1 | ||||||||||
| 2002 | 1 | 1 | |||||||||||
| 2001 | - | ||||||||||||
| 2000 | 5 | 1 | 2 | 2 | |||||||||
| 1999 | 2 | 1 | 1 | ||||||||||
| 221 |
