| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2006 | 1 | 1 | |||||||||||
| 2005 | 4 | 1 | 1 | 1 | 1 | ||||||||
| 2004 | 9 | 8 | 1 | ||||||||||
| 2003 | 2 | 1 | 1 | ||||||||||
| 2002 | 18 | 2 | 2 | 5 | 2 | 2 | 2 | 1 | 2 | ||||
| 2001 | 7 | 1 | 1 | 1 | 2 | 2 | |||||||
| 2000 | 1 | 1 | |||||||||||
| 1999 | 5 | 3 | 1 | 1 | |||||||||
| 1998 | 3 | 1 | 2 | ||||||||||
| 1997 | 6 | 1 | 2 | 2 | 1 | ||||||||
| 1996 | 10 | 3 | 1 | 3 | 3 | ||||||||
| 1995 | 1 | 1 | |||||||||||
| 1994 | 24 | 2 | 1 | 4 | 1 | 5 | 2 | 8 | 1 | ||||
| 1993 | 107 | 14 | 15 | 17 | 12 | 11 | 12 | 9 | 5 | 1 | 5 | 3 | 3 |
| 1992 | 143 | 8 | 10 | 23 | 21 | 20 | 6 | 6 | 4 | 3 | 15 | 17 | 10 |
| 1991 | 219 | 17 | 22 | 17 | 21 | 22 | 11 | 25 | 18 | 17 | 17 | 18 | 14 |
| 1990 | 148 | 15 | 10 | 13 | 3 | 7 | 2 | 17 | 8 | 15 | 23 | 24 | 11 |
| 1989 | 132 | 10 | 15 | 15 | 9 | 16 | 9 | 10 | 8 | 4 | 12 | 12 | 12 |
| 1988 | 125 | 5 | 6 | 9 | 3 | 9 | 8 | 17 | 14 | 10 | 18 | 16 | 10 |
| 1987 | 118 | 6 | 13 | 17 | 15 | 10 | 2 | 14 | 16 | 11 | 10 | 4 | |
| 1986 | 131 | 9 | 7 | 10 | 9 | 9 | 11 | 13 | 11 | 14 | 13 | 14 | 11 |
| 1985 | 158 | 19 | 10 | 11 | 11 | 11 | 10 | 14 | 10 | 19 | 16 | 19 | 8 |
| 1984 | 146 | 9 | 13 | 18 | 14 | 9 | 10 | 21 | 14 | 9 | 5 | 6 | 18 |
| 1983 | 107 | 19 | 13 | 15 | 12 | 10 | 6 | 10 | 8 | 6 | 2 | 6 | |
| 1982 | 153 | 18 | 7 | 11 | 21 | 4 | 1 | 5 | 24 | 18 | 16 | 16 | 12 |
| 1981 | 62 | 5 | 10 | 3 | 7 | 5 | 3 | 6 | 6 | 6 | 5 | 6 | |
| 1980 | 87 | 8 | 8 | 4 | 5 | 2 | 7 | 7 | 4 | 7 | 12 | 16 | 7 |
| 1979 | 9 | 2 | 5 | 2 | |||||||||
| 1936 |