| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1995 | 7 | 2 | 1 | 2 | 1 | 1 | |||||||
| 1994 | 10 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | ||||
| 1993 | 8 | 1 | 3 | 1 | 1 | 2 | |||||||
| 1992 | 3 | 2 | 1 | ||||||||||
| 1991 | 6 | 2 | 2 | 1 | 1 | ||||||||
| 1990 | 9 | 1 | 1 | 1 | 5 | 1 | |||||||
| 1989 | - | ||||||||||||
| 1988 | 53 | 8 | 7 | 5 | 2 | 4 | 4 | 5 | 7 | 2 | 6 | 3 | |
| 1987 | 164 | 20 | 16 | 12 | 9 | 15 | 20 | 15 | 17 | 14 | 15 | 5 | 6 |
| 1986 | 109 | 17 | 12 | 14 | 4 | 6 | 6 | 7 | 3 | 3 | 15 | 11 | 11 |
| 1985 | 190 | 18 | 17 | 22 | 12 | 20 | 16 | 17 | 13 | 14 | 18 | 10 | 13 |
| 1984 | 215 | 27 | 17 | 28 | 7 | 13 | 21 | 19 | 13 | 13 | 25 | 19 | 13 |
| 1983 | 208 | 24 | 15 | 29 | 31 | 18 | 20 | 27 | 3 | 5 | 10 | 11 | 15 |
| 1982 | 229 | 20 | 21 | 21 | 19 | 22 | 25 | 16 | 26 | 17 | 25 | 14 | 3 |
| 1981 | 298 | 24 | 25 | 24 | 26 | 29 | 26 | 21 | 21 | 24 | 32 | 28 | 18 |
| 1980 | 170 | 20 | 17 | 12 | 13 | 13 | 17 | 18 | 17 | 5 | 13 | 15 | 10 |
| 1979 | 207 | 12 | 9 | 29 | 21 | 27 | 18 | 10 | 10 | 20 | 17 | 21 | 13 |
| 1978 | 249 | 20 | 21 | 19 | 21 | 21 | 19 | 23 | 26 | 21 | 22 | 21 | 15 |
| 1977 | 157 | 14 | 16 | 15 | 19 | 19 | 20 | 20 | 15 | 4 | 1 | 3 | 11 |
| 1976 | 91 | 4 | 2 | 17 | 19 | 9 | 13 | 13 | 14 | ||||
| 1975 | 40 | 7 | 5 | 3 | 1 | 2 | 4 | 1 | 3 | 5 | 9 | ||
| 1974 | 35 | 2 | 2 | 4 | 2 | 3 | 3 | 9 | 6 | 4 | |||
| 2458 |
