| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1983 | 5 | 2 | 1 | 1 | 1 | ||||||||
| 1982 | 10 | 1 | 2 | 1 | 1 | 3 | 2 | ||||||
| 1981 | 5 | 1 | 2 | 1 | 1 | ||||||||
| 1980 | 3 | 1 | 1 | 1 | |||||||||
| 1979 | - | ||||||||||||
| 1978 | - | ||||||||||||
| 1977 | 16 | 2 | 4 | 7 | 3 | ||||||||
| 1976 | 27 | 1 | 5 | 3 | 3 | 4 | 3 | 2 | 1 | 1 | 2 | 2 | |
| 1975 | 44 | 1 | 1 | 1 | 7 | 2 | 2 | 7 | 7 | 4 | 11 | 1 | |
| 1974 | 42 | 7 | 6 | 5 | 4 | 5 | 1 | 4 | 1 | 3 | 3 | 3 | |
| 1973 | 55 | 3 | 5 | 9 | 5 | 7 | 8 | 4 | 1 | 5 | 4 | 3 | 1 |
| 1972 | 81 | 16 | 17 | 8 | 1 | 11 | 4 | 2 | 5 | 3 | 5 | 5 | 4 |
| 1971 | 65 | 4 | 5 | 7 | 6 | 3 | 2 | 2 | 4 | 11 | 10 | 11 | |
| 1970 | 55 | 6 | 9 | 12 | 8 | 11 | 3 | 4 | 1 | 1 | |||
| 1969 | 79 | 11 | 15 | 13 | 13 | 11 | 10 | 4 | 2 | ||||
| 1968 | 81 | 5 | 3 | 1 | 3 | 3 | 3 | 13 | 11 | 12 | 13 | 14 | |
| 1967 | 53 | 14 | 17 | 13 | 4 | 2 | 1 | 2 | |||||
| 1966 | 48 | 1 | 4 | 19 | 17 | 2 | 2 | 1 | 2 | ||||
| 1965 | 83 | 9 | 4 | 5 | 6 | 8 | 10 | 9 | 9 | 10 | 4 | 7 | 2 |
| 1964 | 71 | 7 | 2 | 2 | 13 | 13 | 19 | 7 | 8 | ||||
| 1963 | 27 | 1 | 1 | 9 | 3 | 1 | 7 | 5 | |||||
| 1962 | 13 | 3 | 4 | 4 | 2 | ||||||||
| 1961 | 93 | 3 | 1 | 8 | 5 | 15 | 5 | 9 | 9 | 9 | 9 | 12 | 8 |
| 1960 | 30 | 3 | 3 | 2 | 4 | 1 | 2 | 6 | 3 | 5 | 1 | ||
| 1959 | 28 | 4 | 2 | 1 | 4 | 4 | 2 | 2 | 2 | 2 | 3 | 2 | |
| 1958 | 42 | 14 | 4 | 3 | 6 | 2 | 8 | 2 | 1 | 2 | |||
| 1957 | 29 | 1 | 2 | 3 | 2 | 4 | 10 | 7 | |||||
| 1956 | 62 | 10 | 7 | 2 | 6 | 4 | 7 | 7 | 4 | 7 | 7 | 1 | |
| 1955 | 40 | 4 | 2 | 2 | 1 | 8 | 2 | 9 | 12 | ||||
| 1954 | 30 | 10 | 12 | 1 | 1 | 1 | 4 | 1 | |||||
| 1953 | 23 | 7 | 6 | 5 | 1 | 2 | 1 | 1 | |||||
| 1952 | 17 | 2 | 1 | 1 | 4 | 1 | 2 | 3 | 2 | 1 | |||
| 1951 | 1 | 1 | |||||||||||
| 1950 | 35 | 9 | 11 | 8 | 5 | 1 | 1 | ||||||
| 1949 | 27 | 4 | 8 | 11 | 2 | 1 | 1 | ||||||
| 1948 | 5 | 1 | 1 | 1 | 2 | ||||||||
| 1947 | 5 | 1 | 3 | 1 | |||||||||
| 1946 | 3 | 1 | 1 | 1 | |||||||||
| 1333 |
