| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1985 | 2 | 2 | |||||||||||
| 1984 | 13 | 3 | 3 | 2 | 1 | 1 | 1 | 2 | |||||
| 1983 | 10 | 1 | 1 | 2 | 2 | 4 | |||||||
| 1982 | 1 | 1 | |||||||||||
| 1981 | 4 | 1 | 1 | 1 | 1 | ||||||||
| 1980 | - | ||||||||||||
| 1979 | 13 | 1 | 3 | 3 | 1 | 2 | 1 | 1 | 1 | ||||
| 1978 | 31 | 8 | 2 | 7 | 3 | 5 | 1 | 1 | 1 | 3 | |||
| 1977 | 105 | 13 | 9 | 11 | 11 | 11 | 7 | 1 | 9 | 9 | 11 | 2 | 11 |
| 1976 | 71 | 1 | 1 | 1 | 9 | 12 | 10 | 3 | 7 | 5 | 8 | 7 | 7 |
| 1975 | 90 | 4 | 3 | 6 | 7 | 13 | 5 | 4 | 5 | 19 | 12 | 12 | |
| 1974 | 19 | 1 | 2 | 1 | 3 | 3 | 3 | 6 | |||||
| 1973 | 1 | 1 | |||||||||||
| 1972 | 34 | 1 | 3 | 6 | 3 | 3 | 2 | 7 | 3 | 4 | 2 | ||
| 1971 | 55 | 2 | 9 | 8 | 3 | 5 | 5 | 6 | 5 | 1 | 2 | 3 | 6 |
| 1970 | 53 | 3 | 5 | 4 | 5 | 5 | 7 | 5 | 7 | 2 | 2 | 5 | 3 |
| 1969 | 50 | 3 | 3 | 5 | 6 | 4 | 3 | 3 | 4 | 5 | 2 | 5 | 7 |
| 1968 | 48 | 8 | 6 | 2 | 1 | 6 | 2 | 4 | 4 | 6 | 4 | 5 | |
| 1967 | 41 | 2 | 3 | 3 | 2 | 3 | 7 | 6 | 1 | 4 | 4 | 3 | 3 |
| 1966 | 49 | 7 | 2 | 6 | 2 | 7 | 3 | 5 | 3 | 4 | 3 | 3 | 4 |
| 1965 | 40 | 3 | 2 | 3 | 2 | 1 | 2 | 4 | 5 | 4 | 5 | 6 | 3 |
| 1964 | 50 | 3 | 6 | 3 | 3 | 8 | 5 | 8 | 4 | 2 | 2 | 2 | 4 |
| 1963 | 24 | 2 | 3 | 1 | 4 | 1 | 5 | 1 | 3 | 2 | 1 | 1 | |
| 1962 | 15 | 3 | 4 | 1 | 1 | 1 | 3 | 1 | 1 | ||||
| 1961 | 83 | 3 | 4 | 11 | 16 | 18 | 17 | 5 | 5 | 1 | 3 | ||
| 1960 | 61 | 7 | 11 | 11 | 12 | 8 | 4 | 6 | 1 | 1 | |||
| 1959 | 20 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 3 | 2 | ||
| 1958 | 16 | 2 | 2 | 2 | 2 | 1 | 2 | 4 | 1 | ||||
| 1957 | 27 | 5 | 4 | 2 | 2 | 2 | 3 | 1 | 2 | 3 | 3 | ||
| 1956 | 37 | 5 | 3 | 4 | 4 | 2 | 3 | 1 | 3 | 2 | 3 | 3 | 4 |
| 1955 | 28 | 10 | 3 | 1 | 3 | 3 | 5 | 2 | 1 | ||||
| 1954 | 31 | 6 | 1 | 2 | 2 | 1 | 1 | 10 | 8 | ||||
| 1953 | 6 | 3 | 2 | 1 | |||||||||
| 1952 | 8 | 1 | 2 | 5 | |||||||||
| 1951 | 13 | 1 | 4 | 2 | 1 | 5 | |||||||
| 1950 | 9 | 2 | 2 | 1 | 1 | 1 | 2 | ||||||
| 1949 | 2 | 1 | 1 | ||||||||||
| 1160 |
