| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2021 | 2 | 1 | 1 | ||||||||||
| 2020 | 1 | 1 | |||||||||||
| 2019 | 11 | 1 | 2 | 1 | 3 | 1 | 1 | 1 | 1 | ||||
| 2018 | 21 | 2 | 1 | 3 | 1 | 2 | 5 | 4 | 3 | ||||
| 2017 | 18 | 1 | 2 | 3 | 1 | 5 | 2 | 3 | 1 | ||||
| 2016 | 9 | 1 | 1 | 1 | 3 | 2 | 1 | ||||||
| 2015 | 6 | 1 | 1 | 1 | 2 | 1 | |||||||
| 2014 | 8 | 1 | 1 | 3 | 2 | 1 | |||||||
| 2013 | 2 | 1 | 1 | ||||||||||
| 2012 | 25 | 6 | 2 | 8 | 3 | 2 | 1 | 3 | |||||
| 2011 | 73 | 7 | 3 | 4 | 14 | 5 | 6 | 8 | 2 | 9 | 5 | 4 | 6 |
| 2010 | 45 | 1 | 3 | 1 | 1 | 2 | 2 | 12 | 3 | 11 | 9 | ||
| 2009 | 50 | 7 | 1 | 2 | 2 | 3 | 9 | 10 | 2 | 2 | 9 | 3 | |
| 2008 | 69 | 9 | 7 | 4 | 5 | 10 | 5 | 3 | 9 | 3 | 4 | 7 | 3 |
| 2007 | 73 | 10 | 6 | 2 | 4 | 11 | 4 | 6 | 9 | 4 | 6 | 9 | 2 |
| 2006 | 104 | 11 | 8 | 5 | 14 | 10 | 3 | 11 | 8 | 7 | 15 | 9 | 3 |
| 2005 | 108 | 10 | 8 | 2 | 15 | 12 | 5 | 9 | 11 | 9 | 15 | 10 | 2 |
| 2004 | 105 | 10 | 6 | 4 | 14 | 11 | 9 | 8 | 13 | 6 | 10 | 11 | 3 |
| 2003 | 110 | 9 | 8 | 10 | 8 | 15 | 5 | 11 | 9 | 7 | 11 | 12 | 5 |
| 2002 | 109 | 11 | 10 | 12 | 5 | 14 | 2 | 14 | 8 | 5 | 12 | 11 | 5 |
| 2001 | 109 | 10 | 11 | 10 | 10 | 9 | 10 | 9 | 7 | 8 | 10 | 8 | 7 |
| 2000 | 107 | 17 | 11 | 6 | 10 | 11 | 5 | 4 | 4 | 4 | 11 | 11 | 13 |
| 1999 | 124 | 17 | 8 | 11 | 11 | 9 | 8 | 14 | 11 | 3 | 16 | 13 | 3 |
| 1998 | 125 | 16 | 10 | 7 | 12 | 7 | 8 | 16 | 8 | 7 | 18 | 12 | 4 |
| 1997 | 133 | 20 | 7 | 10 | 11 | 12 | 6 | 18 | 12 | 6 | 15 | 12 | 4 |
| 1996 | 122 | 20 | 10 | 9 | 10 | 9 | 7 | 15 | 10 | 6 | 10 | 12 | 4 |
| 1995 | 139 | 24 | 9 | 12 | 9 | 9 | 7 | 17 | 10 | 9 | 17 | 9 | 7 |
| 1994 | 107 | 1 | 13 | 12 | 14 | 3 | 20 | 9 | 3 | 15 | 9 | 8 | |
| 1993 | 138 | 23 | 7 | 9 | 17 | 15 | 3 | 23 | 10 | 11 | 18 | 2 | |
| 1992 | 151 | 20 | 5 | 15 | 15 | 13 | 5 | 24 | 10 | 8 | 17 | 15 | 4 |
| 1991 | 145 | 20 | 5 | 14 | 16 | 12 | 5 | 16 | 13 | 9 | 18 | 12 | 5 |
| 1990 | 113 | 20 | 6 | 11 | 11 | 15 | 6 | 16 | 11 | 1 | 10 | 6 | |
| 1989 | 137 | 12 | 4 | 14 | 14 | 14 | 6 | 19 | 13 | 5 | 17 | 14 | 5 |
| 1988 | 120 | 2 | 10 | 15 | 11 | 9 | 20 | 6 | 6 | 18 | 9 | 14 | |
| 1987 | 1 | 1 | |||||||||||
| 2720 |