| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2020 | 2 | 1 | 1 | ||||||||||
| 2019 | 2 | 1 | 1 | ||||||||||
| 2018 | 5 | 2 | 1 | 1 | 1 | ||||||||
| 2017 | 2 | 1 | 1 | ||||||||||
| 2016 | 1 | 1 | |||||||||||
| 2015 | 7 | 1 | 1 | 4 | 1 | ||||||||
| 2014 | 1 | 1 | |||||||||||
| 2013 | 4 | 1 | 3 | ||||||||||
| 2012 | 1 | 1 | |||||||||||
| 2011 | 1 | 1 | |||||||||||
| 2010 | 48 | 4 | 11 | 6 | 2 | 6 | 2 | 8 | 9 | ||||
| 2009 | 91 | 10 | 12 | 9 | 12 | 12 | 7 | 18 | 11 | ||||
| 2008 | 102 | 7 | 9 | 10 | 16 | 7 | 8 | 4 | 9 | 11 | 11 | 10 | |
| 2007 | 79 | 10 | 9 | 9 | 14 | 2 | 5 | 12 | 7 | 11 | |||
| 2006 | 65 | 3 | 11 | 7 | 3 | 3 | 3 | 5 | 2 | 2 | 9 | 9 | 8 |
| 2005 | 57 | 7 | 8 | 2 | 7 | 4 | 6 | 7 | 2 | 1 | 7 | 6 | |
| 2004 | 57 | 3 | 4 | 5 | 9 | 3 | 10 | 2 | 9 | 6 | 6 | ||
| 2003 | 53 | 2 | 3 | 5 | 2 | 2 | 10 | 1 | 10 | 7 | 8 | 3 | |
| 2002 | 92 | 5 | 11 | 7 | 10 | 11 | 14 | 12 | 12 | 8 | 2 | ||
| 2001 | 130 | 14 | 15 | 6 | 13 | 6 | 7 | 13 | 10 | 12 | 13 | 14 | 7 |
| 2000 | 69 | 3 | 8 | 12 | 9 | 13 | 12 | 12 | |||||
| 1999 | 105 | 12 | 13 | 9 | 12 | 13 | 13 | 14 | 14 | 3 | 2 | ||
| 1998 | 125 | 5 | 8 | 14 | 16 | 11 | 14 | 12 | 12 | 14 | 13 | 6 | |
| 1997 | 174 | 18 | 17 | 11 | 12 | 16 | 18 | 14 | 12 | 13 | 11 | 14 | 18 |
| 1996 | 176 | 15 | 13 | 12 | 21 | 11 | 18 | 17 | 14 | 10 | 15 | 16 | 14 |
| 1995 | 145 | 14 | 2 | 13 | 16 | 12 | 17 | 14 | 13 | 14 | 6 | 7 | 17 |
| 1994 | 87 | 9 | 7 | 3 | 7 | 19 | 19 | 14 | 9 | ||||
| 1993 | 179 | 22 | 17 | 18 | 15 | 12 | 13 | 3 | 13 | 14 | 19 | 18 | 15 |
| 1992 | 173 | 19 | 18 | 8 | 19 | 10 | 20 | 19 | 10 | 13 | 5 | 16 | 16 |
| 1991 | 208 | 11 | 21 | 17 | 11 | 21 | 18 | 17 | 19 | 13 | 22 | 20 | 18 |
| 1990 | 159 | 17 | 9 | 17 | 22 | 21 | 20 | 16 | 25 | 1 | 2 | 3 | 6 |
| 1989 | 92 | 1 | 11 | 10 | 12 | 8 | 9 | 11 | 9 | 6 | 8 | 2 | 5 |
| 1988 | 1 | 1 | |||||||||||
| 1987 | 7 | 4 | 2 | 1 | |||||||||
| 2500 |