| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2009 | 38 | 9 | 6 | 2 | 10 | 5 | 6 | ||||||
| 2008 | 101 | 9 | 7 | 4 | 16 | 10 | 5 | 10 | 8 | 5 | 11 | 12 | 4 |
| 2007 | 103 | 10 | 8 | 2 | 16 | 9 | 3 | 11 | 13 | 4 | 12 | 11 | 4 |
| 2006 | 101 | 10 | 8 | 5 | 15 | 9 | 3 | 11 | 6 | 7 | 15 | 9 | 3 |
| 2005 | 111 | 10 | 8 | 5 | 15 | 13 | 4 | 9 | 11 | 9 | 15 | 10 | 2 |
| 2004 | 110 | 10 | 7 | 4 | 15 | 11 | 10 | 9 | 13 | 6 | 11 | 11 | 3 |
| 2003 | 113 | 11 | 8 | 11 | 8 | 17 | 3 | 11 | 8 | 8 | 11 | 12 | 5 |
| 2002 | 108 | 9 | 10 | 12 | 5 | 16 | 1 | 14 | 8 | 5 | 12 | 11 | 5 |
| 2001 | 111 | 10 | 11 | 11 | 12 | 9 | 10 | 9 | 6 | 8 | 10 | 8 | 7 |
| 2000 | 108 | 17 | 11 | 7 | 10 | 11 | 5 | 4 | 4 | 4 | 11 | 11 | 13 |
| 1999 | 124 | 17 | 9 | 10 | 11 | 8 | 7 | 14 | 11 | 4 | 17 | 13 | 3 |
| 1998 | 96 | 16 | 10 | 8 | 12 | 1 | 8 | 7 | 18 | 12 | 4 | ||
| 1997 | 138 | 20 | 8 | 10 | 14 | 12 | 7 | 18 | 12 | 7 | 15 | 11 | 4 |
| 1996 | 128 | 20 | 10 | 9 | 13 | 10 | 7 | 16 | 10 | 6 | 11 | 12 | 4 |
| 1995 | 140 | 23 | 9 | 13 | 10 | 9 | 7 | 17 | 10 | 9 | 17 | 9 | 7 |
| 1994 | 140 | 21 | 8 | 11 | 17 | 14 | 3 | 20 | 9 | 3 | 16 | 10 | 8 |
| 1993 | 155 | 24 | 7 | 9 | 18 | 15 | 3 | 22 | 10 | 11 | 18 | 15 | 3 |
| 1992 | 150 | 20 | 7 | 16 | 13 | 13 | 5 | 22 | 10 | 8 | 17 | 15 | 4 |
| 1991 | 140 | 20 | 5 | 15 | 16 | 12 | 5 | 17 | 13 | 9 | 12 | 11 | 5 |
| 1990 | 144 | 21 | 7 | 11 | 12 | 15 | 6 | 17 | 11 | 7 | 20 | 11 | 6 |
| 1989 | 31 | 19 | 5 | 7 | |||||||||
| 1988 | 163 | 23 | 8 | 15 | 18 | 12 | 9 | 23 | 8 | 5 | 19 | 9 | 14 |
| 1987 | 190 | 27 | 12 | 15 | 19 | 16 | 9 | 23 | 10 | 12 | 25 | 11 | 11 |
| 1986 | 196 | 27 | 12 | 15 | 21 | 16 | 10 | 25 | 14 | 10 | 25 | 9 | 12 |
| 1985 | 171 | 26 | 11 | 17 | 18 | 19 | 14 | 1 | 15 | 24 | 14 | 12 | |
| 1984 | 84 | 20 | 15 | 3 | 3 | 1 | 1 | 1 | 18 | 11 | 11 | ||
| 1983 | 153 | 17 | 13 | 10 | 26 | 16 | 4 | 11 | 8 | 26 | 9 | 13 | |
| 1982 | 160 | 21 | 2 | 11 | 18 | 14 | 10 | 23 | 6 | 12 | 25 | 5 | 13 |
| 1981 | 52 | 10 | 5 | 21 | 8 | 8 | |||||||
| 3559 |