| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2007 | 75 | 15 | 9 | 8 | 15 | 18 | 10 | ||||||
| 2006 | 91 | 11 | 10 | 15 | 15 | 7 | 7 | 13 | 13 | ||||
| 2005 | 146 | 15 | 12 | 11 | 13 | 17 | 12 | 10 | 15 | 10 | 11 | 12 | 8 |
| 2004 | 167 | 11 | 14 | 12 | 13 | 18 | 14 | 16 | 15 | 12 | 18 | 13 | 11 |
| 2003 | 153 | 11 | 13 | 9 | 12 | 16 | 15 | 12 | 12 | 15 | 13 | 15 | 10 |
| 2002 | 90 | 15 | 15 | 16 | 16 | 17 | 11 | ||||||
| 2001 | 84 | 12 | 16 | 14 | 14 | 14 | 14 | ||||||
| 2000 | 170 | 4 | 9 | 13 | 18 | 18 | 17 | 16 | 15 | 17 | 17 | 13 | 13 |
| 1999 | 167 | 14 | 18 | 13 | 14 | 14 | 11 | 14 | 15 | 15 | 15 | 13 | 11 |
| 1998 | 104 | 10 | 15 | 19 | 15 | 10 | 12 | 2 | 10 | 11 | |||
| 1997 | 118 | 7 | 15 | 14 | 6 | 4 | 9 | 9 | 12 | 13 | 9 | 12 | 8 |
| 1996 | 156 | 13 | 8 | 14 | 7 | 14 | 21 | 17 | 16 | 14 | 10 | 13 | 9 |
| 1995 | 119 | 3 | 4 | 16 | 13 | 3 | 10 | 24 | 1 | 13 | 6 | 11 | 15 |
| 1994 | 104 | 2 | 14 | 1 | 6 | 6 | 11 | 6 | 6 | 12 | 11 | 17 | 12 |
| 1993 | 127 | 17 | 11 | 13 | 11 | 10 | 14 | 9 | 13 | 3 | 23 | 3 | |
| 1992 | 100 | 6 | 8 | 1 | 16 | 14 | 12 | 5 | 10 | 5 | 11 | 12 | |
| 1991 | 103 | 11 | 11 | 1 | 12 | 11 | 8 | 7 | 7 | 11 | 13 | 9 | 2 |
| 1990 | 55 | 1 | 15 | 6 | 11 | 5 | 6 | 10 | 1 | ||||
| 1989 | 102 | 3 | 17 | 5 | 2 | 21 | 6 | 7 | 14 | 8 | 4 | 11 | 4 |
| 1988 | 185 | 15 | 10 | 20 | 26 | 17 | 8 | 8 | 27 | 6 | 22 | 4 | 22 |
| 1987 | 153 | 13 | 6 | 13 | 2 | 14 | 10 | 23 | 7 | 23 | 11 | 17 | 14 |
| 1986 | 118 | 17 | 19 | 25 | 24 | 28 | 2 | 3 | |||||
| 1985 | 20 | 4 | 16 | ||||||||||
| 2707 |