| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1987 | 1 | 1 | |||||||||||
| 1986 | - | ||||||||||||
| 1985 | - | ||||||||||||
| 1984 | - | ||||||||||||
| 1983 | - | ||||||||||||
| 1982 | 15 | 10 | 4 | 1 | |||||||||
| 1981 | 39 | 4 | 7 | 6 | 3 | 3 | 1 | 3 | 3 | 2 | 1 | 3 | 3 |
| 1980 | 49 | 4 | 3 | 2 | 8 | 5 | 3 | 8 | 4 | 3 | 2 | 4 | 3 |
| 1979 | 41 | 4 | 7 | 4 | 7 | 2 | 1 | 4 | 3 | 4 | 1 | 1 | 3 |
| 1978 | 54 | 4 | 3 | 6 | 9 | 10 | 8 | 2 | 1 | 2 | 2 | 4 | 3 |
| 1977 | 57 | 8 | 5 | 5 | 4 | 5 | 6 | 4 | 3 | 4 | 6 | 6 | 1 |
| 1976 | 61 | 6 | 7 | 7 | 4 | 8 | 3 | 2 | 3 | 3 | 5 | 6 | 7 |
| 1975 | 62 | 6 | 5 | 1 | 4 | 7 | 4 | 1 | 5 | 3 | 2 | 10 | 14 |
| 1974 | 61 | 2 | 2 | 6 | 7 | 9 | 2 | 1 | 2 | 6 | 6 | 12 | 6 |
| 1973 | 46 | 4 | 4 | 5 | 4 | 2 | 4 | 2 | 8 | 4 | 1 | 4 | 4 |
| 1972 | 37 | 7 | 4 | 3 | 4 | 2 | 1 | 1 | 4 | 2 | 8 | 1 | |
| 1971 | 60 | 5 | 12 | 4 | 2 | 4 | 5 | 2 | 1 | 6 | 7 | 7 | 5 |
| 1970 | 69 | 7 | 5 | 14 | 8 | 5 | 3 | 1 | 10 | 3 | 4 | 5 | 4 |
| 1969 | 93 | 14 | 7 | 6 | 8 | 10 | 13 | 5 | 7 | 6 | 6 | 4 | 7 |
| 1968 | 71 | 7 | 6 | 5 | 6 | 9 | 6 | 2 | 5 | 4 | 9 | 7 | 5 |
| 1967 | 56 | 10 | 4 | 7 | 6 | 4 | 5 | 2 | 5 | 4 | 2 | 4 | 3 |
| 1966 | 94 | 6 | 8 | 7 | 15 | 8 | 6 | 4 | 6 | 5 | 11 | 10 | 8 |
| 1965 | 74 | 6 | 4 | 10 | 8 | 5 | 3 | 1 | 8 | 5 | 5 | 11 | 8 |
| 1964 | 113 | 13 | 14 | 11 | 7 | 7 | 9 | 5 | 3 | 5 | 16 | 14 | 9 |
| 1963 | 44 | 4 | 6 | 7 | 3 | 4 | 4 | 2 | 5 | 1 | 8 | ||
| 1962 | 66 | 1 | 8 | 10 | 3 | 9 | 8 | 3 | 3 | 2 | 5 | 3 | 11 |
| 1961 | 84 | 12 | 6 | 13 | 7 | 12 | 6 | 5 | 3 | 8 | 3 | 2 | 7 |
| 1960 | 98 | 9 | 6 | 10 | 10 | 8 | 8 | 6 | 8 | 7 | 5 | 12 | 9 |
| 1959 | 131 | 9 | 15 | 13 | 16 | 11 | 16 | 13 | 7 | 5 | 14 | 8 | 4 |
| 1958 | 112 | 14 | 16 | 13 | 11 | 8 | 5 | 9 | 9 | 5 | 5 | 10 | 7 |
| 1957 | 103 | 9 | 11 | 14 | 10 | 3 | 7 | 5 | 5 | 7 | 16 | 5 | 11 |
| 1956 | 91 | 10 | 10 | 14 | 10 | 11 | 8 | 4 | 4 | 1 | 4 | 15 | |
| 1955 | 90 | 12 | 10 | 10 | 7 | 5 | 7 | 5 | 10 | 2 | 5 | 5 | 12 |
| 1954 | 92 | 7 | 5 | 3 | 12 | 4 | 5 | 8 | 9 | 9 | 9 | 11 | 10 |
| 1953 | 58 | 6 | 6 | 8 | 3 | 4 | 3 | 5 | 5 | 1 | 9 | 4 | 4 |
| 1952 | 81 | 5 | 6 | 9 | 12 | 6 | 7 | 8 | 6 | 3 | 9 | 5 | 5 |
| 1951 | 37 | 6 | 4 | 1 | 4 | 3 | 4 | 2 | 3 | 4 | 2 | 4 | |
| 1950 | 3 | 1 | 2 | ||||||||||
| 1949 | - | ||||||||||||
| 1948 | - | ||||||||||||
| 1947 | - | ||||||||||||
| 1946 | - | ||||||||||||
| 1945 | - | ||||||||||||
| 1944 | 1 | 1 | |||||||||||
| 2244 |
