| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2004 | 9 | 5 | 1 | 3 | |||||||||
| 2003 | - | ||||||||||||
| 2002 | 38 | 12 | 9 | 6 | 8 | 2 | 1 | ||||||
| 2001 | 22 | 4 | 8 | 4 | 4 | 1 | 1 | ||||||
| 2000 | 111 | 15 | 17 | 13 | 11 | 8 | 13 | 11 | 14 | 5 | 2 | 2 | |
| 1999 | 179 | 17 | 17 | 13 | 19 | 16 | 17 | 18 | 14 | 11 | 12 | 19 | 6 |
| 1998 | 38 | 7 | 3 | 9 | 7 | 12 | |||||||
| 1997 | 31 | 7 | 1 | 2 | 6 | 10 | 5 | ||||||
| 1996 | 72 | 6 | 2 | 6 | 1 | 3 | 6 | 11 | 10 | 7 | 6 | 6 | 8 |
| 1995 | 68 | 9 | 19 | 6 | 4 | 3 | 5 | 12 | 2 | 7 | 1 | ||
| 1994 | 66 | 6 | 5 | 2 | 1 | 8 | 2 | 4 | 13 | 12 | 5 | 6 | 2 |
| 1993 | 95 | 13 | 9 | 4 | 2 | 22 | 2 | 4 | 19 | 15 | 5 | ||
| 1992 | 131 | 12 | 20 | 5 | 15 | 12 | 11 | 16 | 18 | 14 | 8 | ||
| 1991 | 211 | 19 | 18 | 16 | 14 | 22 | 21 | 16 | 12 | 9 | 21 | 26 | 17 |
| 1990 | 174 | 7 | 2 | 16 | 16 | 14 | 19 | 12 | 14 | 19 | 19 | 17 | 19 |
| 1989 | 149 | 13 | 15 | 10 | 11 | 17 | 14 | 11 | 7 | 6 | 12 | 16 | 17 |
| 1988 | 146 | 6 | 17 | 10 | 10 | 17 | 16 | 14 | 18 | 20 | 18 | ||
| 1987 | 141 | 26 | 12 | 20 | 11 | 14 | 8 | 20 | 12 | 11 | 1 | 3 | 3 |
| 1986 | 54 | 1 | 3 | 3 | 1 | 1 | 8 | 9 | 3 | 16 | 9 | ||
| 1735 |