| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1985 | 25 | 8 | 7 | 7 | 3 | ||||||||
| 1984 | 8 | 1 | 5 | 1 | 1 | ||||||||
| 1983 | 47 | 10 | 5 | 3 | 4 | 9 | 5 | 7 | 2 | 1 | 1 | ||
| 1982 | 52 | 9 | 6 | 3 | 5 | 6 | 3 | 6 | 5 | 2 | 3 | 1 | 3 |
| 1981 | 58 | 14 | 2 | 1 | 2 | 3 | 5 | 4 | 4 | 6 | 4 | 9 | 4 |
| 1980 | 99 | 9 | 14 | 19 | 12 | 1 | 3 | 6 | 6 | 9 | 11 | 6 | 3 |
| 1979 | 80 | 8 | 8 | 7 | 5 | 2 | 5 | 7 | 3 | 9 | 5 | 10 | 11 |
| 1978 | 65 | 11 | 1 | 8 | 2 | 1 | 3 | 5 | 4 | 7 | 9 | 7 | 7 |
| 1977 | 50 | 1 | 1 | 5 | 4 | 5 | 3 | 5 | 6 | 7 | 7 | 6 | |
| 1976 | 29 | 3 | 3 | 7 | 5 | 2 | 3 | 2 | 2 | 2 | |||
| 1975 | 40 | 5 | 10 | 5 | 5 | 5 | 4 | 3 | 3 | ||||
| 1974 | 38 | 12 | 4 | 8 | 1 | 3 | 5 | 5 | |||||
| 1973 | - | ||||||||||||
| 1972 | 3 | 2 | 1 | ||||||||||
| 1971 | 21 | 4 | 5 | 6 | 3 | 1 | 1 | 1 | |||||
| 1970 | 118 | 14 | 13 | 4 | 12 | 14 | 9 | 7 | 5 | 7 | 8 | 11 | 14 |
| 1969 | 86 | 8 | 6 | 5 | 10 | 9 | 17 | 9 | 5 | 3 | 6 | 6 | 2 |
| 1968 | 13 | 4 | 5 | 4 | |||||||||
| 1967 | 48 | 3 | 9 | 8 | 9 | 11 | 7 | 1 | |||||
| 1966 | 37 | 2 | 3 | 4 | 2 | 1 | 3 | 3 | 7 | 6 | 5 | 1 | |
| 1965 | 2 | 2 | |||||||||||
| 919 |
