| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2015 | 9 | 1 | 3 | 1 | 2 | 1 | 1 | ||||||
| 2014 | 3 | 1 | 1 | 1 | |||||||||
| 2013 | 13 | 2 | 2 | 3 | 1 | 1 | 2 | 2 | |||||
| 2012 | 14 | 3 | 1 | 2 | 2 | 1 | 1 | 4 | |||||
| 2011 | 12 | 1 | 1 | 3 | 1 | 3 | 1 | 2 | |||||
| 2010 | 27 | 1 | 6 | 4 | 4 | 2 | 5 | 2 | 2 | 1 | |||
| 2009 | 25 | 2 | 2 | 1 | 4 | 7 | 1 | 2 | 1 | 2 | 2 | 1 | |
| 2008 | 36 | 1 | 2 | 2 | 11 | 5 | 1 | 2 | 9 | 3 | |||
| 2007 | 39 | 1 | 6 | 6 | 1 | 1 | 3 | 2 | 5 | 5 | 8 | 1 | |
| 2006 | 63 | 4 | 2 | 3 | 6 | 5 | 5 | 7 | 11 | 5 | 10 | 3 | 2 |
| 2005 | 24 | 1 | 2 | 5 | 2 | 2 | 4 | 2 | 3 | 1 | 2 | ||
| 2004 | 32 | 4 | 7 | 2 | 3 | 3 | 4 | 3 | 1 | 1 | 1 | 2 | 1 |
| 2003 | 45 | 4 | 1 | 5 | 2 | 3 | 3 | 4 | 7 | 6 | 1 | 5 | 4 |
| 2002 | 40 | 5 | 3 | 3 | 3 | 3 | 3 | 5 | 4 | 1 | 7 | 2 | 1 |
| 2001 | 40 | 2 | 3 | 2 | 5 | 3 | 4 | 3 | 5 | 3 | 4 | 4 | 2 |
| 2000 | 73 | 11 | 6 | 9 | 10 | 5 | 5 | 5 | 5 | 6 | 5 | 2 | 4 |
| 1999 | 121 | 10 | 8 | 8 | 11 | 11 | 12 | 12 | 8 | 9 | 13 | 10 | 9 |
| 1998 | 106 | 10 | 4 | 9 | 7 | 11 | 6 | 12 | 9 | 8 | 10 | 13 | 7 |
| 1997 | 97 | 5 | 6 | 8 | 11 | 13 | 10 | 5 | 8 | 8 | 9 | 7 | 7 |
| 1996 | 41 | 3 | 3 | 4 | 2 | 3 | 5 | 2 | 2 | 3 | 4 | 3 | 7 |
| 1995 | 129 | 14 | 15 | 25 | 12 | 12 | 17 | 14 | 11 | 5 | 1 | 3 | |
| 1994 | 51 | 1 | 1 | 3 | 1 | 2 | 1 | 1 | 7 | 10 | 18 | 6 | |
| 1993 | 6 | 2 | 1 | 1 | 1 | 1 | |||||||
| 1992 | 7 | 1 | 1 | 1 | 4 | ||||||||
| 1053 |
