| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2000 | 44 | 1 | 11 | 11 | 5 | 1 | 8 | 2 | 5 | ||||
| 1999 | 45 | 7 | 4 | 1 | 17 | 13 | 3 | ||||||
| 1998 | 80 | 10 | 8 | 12 | 1 | 8 | 7 | 18 | 12 | 4 | |||
| 1997 | 119 | 20 | 8 | 10 | 13 | 2 | 18 | 12 | 6 | 15 | 11 | 4 | |
| 1996 | 114 | 21 | 10 | 9 | 13 | 2 | 16 | 10 | 6 | 11 | 12 | 4 | |
| 1995 | 139 | 23 | 9 | 13 | 10 | 9 | 7 | 17 | 10 | 8 | 17 | 9 | 7 |
| 1994 | 139 | 21 | 8 | 15 | 12 | 14 | 3 | 20 | 9 | 3 | 16 | 10 | 8 |
| 1993 | 147 | 24 | 7 | 9 | 18 | 14 | 3 | 22 | 3 | 9 | 19 | 15 | 4 |
| 1992 | 126 | 20 | 7 | 15 | 13 | 2 | 5 | 22 | 6 | 17 | 15 | 4 | |
| 1991 | 149 | 20 | 11 | 16 | 18 | 10 | 10 | 17 | 13 | 6 | 11 | 12 | 5 |
| 1990 | 140 | 7 | 11 | 12 | 5 | 14 | 18 | 16 | 16 | 15 | 15 | 11 | |
| 1989 | 87 | 1 | 6 | 17 | 4 | 6 | 20 | 1 | 14 | 13 | 5 | ||
| 1988 | 86 | 8 | 15 | 1 | 23 | 5 | 11 | 9 | 14 | ||||
| 1987 | 91 | 1 | 1 | 5 | 20 | 23 | 10 | 13 | 9 | 9 | |||
| 1986 | 141 | 10 | 13 | 13 | 27 | 6 | 7 | 25 | 2 | 9 | 8 | 9 | 12 |
| 1985 | 122 | 2 | 3 | 22 | 6 | 2 | 28 | 8 | 7 | 16 | 13 | 15 | |
| 1984 | 106 | 9 | 12 | 23 | 5 | 2 | 22 | 7 | 6 | 1 | 8 | 11 | |
| 1983 | 127 | 9 | 5 | 8 | 26 | 2 | 9 | 7 | 11 | 13 | 16 | 9 | 12 |
| 1982 | 155 | 17 | 19 | 16 | 15 | 19 | 15 | 7 | 10 | 12 | 3 | 6 | 16 |
| 1981 | 146 | 14 | 16 | 19 | 8 | 23 | 7 | 11 | 21 | 3 | 13 | 11 | |
| 1980 | 149 | 24 | 8 | 5 | 9 | 27 | 7 | 4 | 10 | 23 | 8 | 9 | 15 |
| 1979 | 150 | 15 | 13 | 10 | 10 | 27 | 13 | 9 | 13 | 12 | 9 | 13 | 6 |
| 1978 | 121 | 14 | 15 | 14 | 13 | 12 | 11 | 10 | 5 | 8 | 6 | 4 | 9 |
| 1977 | 101 | 21 | 9 | 2 | 10 | 1 | 2 | 5 | 23 | 12 | 8 | 8 | |
| 1976 | 117 | 13 | 6 | 8 | 6 | 11 | 7 | 18 | 14 | 10 | 12 | 11 | 1 |
| 1975 | 115 | 5 | 12 | 13 | 12 | 8 | 9 | 6 | 3 | 26 | 8 | 13 | |
| 1974 | 82 | 5 | 12 | 12 | 5 | 11 | 5 | 10 | 6 | 5 | 4 | 7 | |
| 1973 | 101 | 15 | 10 | 14 | 9 | 9 | 8 | 10 | 18 | 7 | 1 | ||
| 3239 |
