| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2014 | 12 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | |||||
| 2013 | 12 | 1 | 1 | 3 | 1 | 1 | 2 | 2 | 1 | ||||
| 2012 | 12 | 1 | 1 | 1 | 3 | 2 | 1 | 1 | 1 | 1 | |||
| 2011 | 15 | 1 | 4 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | ||
| 2010 | 1 | 1 | |||||||||||
| 2009 | - | ||||||||||||
| 2008 | 19 | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 2 | 1 | |||
| 2007 | 27 | 1 | 2 | 3 | 2 | 2 | 3 | 5 | 1 | 2 | 1 | 2 | 3 |
| 2006 | 24 | 2 | 1 | 1 | 3 | 1 | 5 | 1 | 2 | 1 | 5 | 2 | |
| 2005 | 14 | 1 | 3 | 2 | 1 | 2 | 1 | 2 | 1 | 1 | |||
| 2004 | 31 | 5 | 2 | 3 | 6 | 1 | 3 | 1 | 2 | 4 | 1 | 2 | 1 |
| 2003 | 35 | 4 | 1 | 2 | 2 | 5 | 5 | 3 | 6 | 2 | 4 | 1 | |
| 2002 | 36 | 2 | 3 | 4 | 3 | 6 | 2 | 5 | 4 | 4 | 1 | 2 | |
| 2001 | 44 | 1 | 1 | 3 | 1 | 5 | 4 | 6 | 6 | 3 | 5 | 7 | 2 |
| 2000 | 33 | 3 | 1 | 5 | 4 | 3 | 4 | 2 | 4 | 3 | 1 | 2 | 1 |
| 1999 | 31 | 2 | 4 | 2 | 4 | 2 | 2 | 3 | 1 | 5 | 3 | 3 | |
| 1998 | 25 | 4 | 3 | 3 | 2 | 1 | 1 | 3 | 1 | 4 | 2 | 1 | |
| 1997 | 29 | 2 | 2 | 7 | 2 | 2 | 1 | 2 | 2 | 4 | 5 | ||
| 1996 | 24 | 3 | 1 | 1 | 2 | 2 | 1 | 3 | 2 | 4 | 2 | 3 | |
| 1995 | 24 | 3 | 3 | 3 | 3 | 1 | 2 | 1 | 4 | 3 | 1 | ||
| 1994 | 5 | 2 | 1 | 1 | 1 | ||||||||
| 1993 | 1 | 1 | |||||||||||
| 1992 | 2 | 1 | 1 | ||||||||||
| 456 |
