| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1983 | 10 | 2 | 2 | 1 | 2 | 2 | 1 | ||||||
| 1982 | 46 | 6 | 15 | 1 | 3 | 14 | 1 | 1 | 3 | 1 | 1 | ||
| 1981 | 63 | 4 | 4 | 6 | 4 | 4 | 7 | 5 | 10 | 8 | 5 | 6 | |
| 1980 | 50 | 3 | 1 | 4 | 10 | 5 | 11 | 6 | 3 | 3 | 3 | 1 | |
| 1979 | 42 | 5 | 5 | 3 | 6 | 6 | 2 | 2 | 1 | 4 | 4 | 2 | 2 |
| 1978 | 38 | 2 | 3 | 3 | 4 | 2 | 10 | 5 | 6 | 3 | |||
| 1977 | 33 | 5 | 3 | 4 | 3 | 2 | 5 | 1 | 4 | 2 | 3 | 1 | |
| 1976 | 55 | 7 | 4 | 9 | 4 | 6 | 3 | 4 | 5 | 4 | 4 | 4 | 1 |
| 1975 | 61 | 7 | 6 | 6 | 6 | 9 | 7 | 1 | 2 | 7 | 4 | 2 | 4 |
| 1974 | 54 | 2 | 5 | 5 | 6 | 4 | 6 | 3 | 7 | 4 | 4 | 4 | 4 |
| 1973 | 28 | 2 | 1 | 1 | 2 | 3 | 3 | 7 | 9 | ||||
| 1972 | 2 | 1 | 1 | ||||||||||
| 1971 | 5 | 1 | 1 | 1 | 1 | 1 | |||||||
| 1970 | 3 | 2 | 1 | ||||||||||
| 1969 | 81 | 10 | 6 | 9 | 14 | 9 | 9 | 8 | 5 | 3 | 4 | 4 | |
| 1968 | 72 | 1 | 4 | 3 | 3 | 5 | 9 | 6 | 9 | 7 | 11 | 8 | 6 |
| 1967 | 77 | 3 | 10 | 10 | 9 | 3 | 9 | 7 | 7 | 6 | 5 | 8 | |
| 1966 | 9 | 8 | 1 | ||||||||||
| 1965 | 1 | 1 | |||||||||||
| 1964 | - | ||||||||||||
| 1963 | 47 | 16 | 7 | 6 | 5 | 4 | 3 | 1 | 1 | 3 | 1 | ||
| 1962 | 57 | 2 | 6 | 7 | 6 | 10 | 4 | 5 | 4 | 3 | 5 | 5 | |
| 1961 | 88 | 8 | 11 | 3 | 5 | 7 | 13 | 6 | 9 | 6 | 9 | 4 | 7 |
| 1960 | 101 | 12 | 5 | 11 | 9 | 7 | 7 | 7 | 9 | 6 | 7 | 10 | 11 |
| 1959 | 29 | 1 | 3 | 4 | 2 | 1 | 2 | 3 | 7 | 6 | |||
| 1958 | 4 | 1 | 1 | 1 | 1 | ||||||||
| 1056 |
