| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2020 | 2 | 1 | 1 | ||||||||||
| 2019 | 7 | 1 | 3 | 2 | 1 | ||||||||
| 2018 | 26 | 1 | 5 | 11 | 1 | 2 | 6 | ||||||
| 2017 | 46 | 3 | 7 | 8 | 12 | 6 | 4 | 6 | |||||
| 2016 | 63 | 9 | 2 | 8 | 2 | 7 | 11 | 12 | 2 | 10 | |||
| 2015 | 58 | 7 | 2 | 6 | 6 | 4 | 2 | 8 | 6 | 17 | |||
| 2014 | 51 | 6 | 2 | 6 | 1 | 6 | 6 | 10 | 4 | 10 | |||
| 2013 | 45 | 1 | 1 | 5 | 6 | 6 | 7 | 6 | 5 | 8 | |||
| 2012 | 55 | 5 | 7 | 4 | 8 | 3 | 5 | 9 | 6 | 8 | |||
| 2011 | 44 | 6 | 1 | 4 | 4 | 10 | 6 | 6 | 6 | 1 | |||
| 2010 | 56 | 1 | 8 | 6 | 4 | 10 | 15 | 4 | 2 | 5 | 1 | ||
| 2009 | 66 | 2 | 2 | 7 | 5 | 4 | 8 | 8 | 12 | 8 | 4 | 6 | |
| 2008 | 58 | 10 | 1 | 10 | 10 | 4 | 4 | 6 | 6 | 5 | 2 | ||
| 2007 | 71 | 2 | 12 | 10 | 1 | 5 | 12 | 4 | 6 | 6 | 11 | 2 | |
| 2006 | 68 | 9 | 8 | 7 | 9 | 7 | 1 | 9 | 2 | 2 | 7 | 2 | 5 |
| 2005 | 36 | 1 | 1 | 1 | 1 | 4 | 1 | 7 | 4 | 13 | 3 | ||
| 2004 | 2 | 1 | 1 | ||||||||||
| 2003 | 26 | 4 | 3 | 7 | 1 | 4 | 1 | 2 | 4 | ||||
| 2002 | 31 | 2 | 1 | 1 | 1 | 12 | 1 | 5 | 2 | 6 | |||
| 2001 | 87 | 5 | 10 | 2 | 4 | 6 | 8 | 12 | 7 | 10 | 13 | 10 | |
| 2000 | 83 | 6 | 5 | 4 | 3 | 5 | 15 | 9 | 4 | 7 | 10 | 10 | 5 |
| 1999 | 83 | 7 | 9 | 10 | 5 | 9 | 5 | 7 | 6 | 7 | 7 | 6 | 5 |
| 1998 | 126 | 8 | 9 | 13 | 13 | 12 | 9 | 10 | 12 | 13 | 11 | 9 | 7 |
| 1997 | 120 | 8 | 8 | 13 | 13 | 11 | 9 | 10 | 6 | 15 | 9 | 9 | 9 |
| 1996 | 97 | 7 | 1 | 7 | 7 | 11 | 10 | 7 | 10 | 9 | 8 | 13 | 7 |
| 1995 | 157 | 14 | 14 | 19 | 16 | 15 | 11 | 10 | 9 | 15 | 11 | 13 | 10 |
| 1994 | 134 | 13 | 12 | 12 | 12 | 14 | 12 | 13 | 14 | 16 | 6 | 10 | |
| 1993 | 75 | 7 | 5 | 4 | 5 | 7 | 6 | 7 | 9 | 2 | 4 | 11 | 8 |
| 1992 | 41 | 4 | 4 | 4 | 3 | 4 | 4 | 1 | 1 | 4 | 7 | 5 | |
| 1991 | 41 | 3 | 4 | 5 | 3 | 5 | 4 | 4 | 3 | 3 | 4 | 2 | 1 |
| 1990 | 12 | 1 | 2 | 2 | 7 | ||||||||
| 1989 | 22 | 9 | 5 | 8 | |||||||||
| 1988 | 86 | 6 | 3 | 3 | 12 | 8 | 3 | 9 | 7 | 16 | 4 | 12 | 3 |
| 1987 | 76 | 5 | 3 | 6 | 6 | 2 | 4 | 14 | 7 | 7 | 10 | 10 | 2 |
| 1986 | 30 | 5 | 2 | 3 | 4 | 2 | 9 | 1 | 2 | 2 | |||
| 2081 |