| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1988 | 2 | 2 | |||||||||||
| 1987 | 6 | 1 | 4 | 1 | |||||||||
| 1986 | 3 | 2 | 1 | ||||||||||
| 1985 | 39 | 6 | 3 | 5 | 5 | 6 | 7 | 4 | 2 | 1 | |||
| 1984 | 127 | 10 | 11 | 16 | 14 | 14 | 15 | 5 | 11 | 5 | 9 | 11 | 6 |
| 1983 | 2 | 2 | |||||||||||
| 1982 | - | ||||||||||||
| 1981 | 52 | 10 | 9 | 6 | 10 | 5 | 9 | 3 | |||||
| 1980 | 100 | 9 | 11 | 10 | 8 | 6 | 5 | 7 | 12 | 9 | 7 | 6 | 10 |
| 1979 | 83 | 3 | 10 | 13 | 15 | 4 | 8 | 1 | 1 | 9 | 5 | 3 | 11 |
| 1978 | 59 | 15 | 11 | 16 | 14 | 3 | |||||||
| 1977 | 78 | 11 | 3 | 6 | 4 | 2 | 1 | 12 | 11 | 7 | 7 | 14 | |
| 1976 | 91 | 11 | 3 | 2 | 2 | 1 | 2 | 8 | 15 | 12 | 12 | 16 | 7 |
| 1975 | 45 | 3 | 2 | 2 | 1 | 1 | 6 | 9 | 10 | 11 | |||
| 1974 | 108 | 6 | 9 | 7 | 3 | 6 | 7 | 9 | 15 | 10 | 11 | 12 | 13 |
| 1973 | 111 | 16 | 7 | 11 | 1 | 3 | 11 | 18 | 9 | 8 | 8 | 5 | 14 |
| 1972 | 114 | 13 | 12 | 8 | 15 | 10 | 5 | 4 | 10 | 11 | 8 | 14 | 4 |
| 1971 | 111 | 7 | 9 | 13 | 1 | 7 | 8 | 2 | 5 | 12 | 21 | 16 | 10 |
| 1970 | 94 | 11 | 12 | 7 | 14 | 15 | 5 | 4 | 5 | 6 | 7 | 8 | |
| 1969 | 65 | 12 | 11 | 9 | 8 | 13 | 3 | 5 | 4 | ||||
| 1968 | 95 | 2 | 2 | 6 | 4 | 3 | 6 | 13 | 16 | 11 | 11 | 12 | 9 |
| 1967 | 130 | 7 | 9 | 11 | 8 | 15 | 13 | 9 | 11 | 17 | 12 | 11 | 7 |
| 1966 | 138 | 15 | 15 | 19 | 15 | 11 | 11 | 16 | 13 | 5 | 7 | 4 | 7 |
| 1965 | 143 | 7 | 11 | 13 | 11 | 16 | 8 | 13 | 15 | 9 | 14 | 14 | 12 |
| 1964 | 77 | 10 | 13 | 10 | 13 | 6 | 8 | 8 | 7 | 2 | |||
| 1963 | 104 | 10 | 8 | 13 | 9 | 11 | 5 | 4 | 10 | 4 | 12 | 8 | 10 |
| 1962 | 59 | 4 | 2 | 1 | 2 | 1 | 1 | 1 | 6 | 12 | 16 | 13 | |
| 1961 | 39 | 9 | 5 | 2 | 2 | 2 | 4 | 3 | 2 | 1 | 4 | 1 | 4 |
| 1960 | 79 | 4 | 5 | 9 | 6 | 4 | 1 | 11 | 3 | 2 | 14 | 10 | 10 |
| 1959 | 65 | 7 | 2 | 8 | 8 | 13 | 10 | 5 | 1 | 3 | 3 | 2 | 3 |
| 1958 | 64 | 1 | 1 | 6 | 7 | 7 | 7 | 3 | 4 | 9 | 10 | 5 | 4 |
| 1957 | 50 | 5 | 4 | 6 | 2 | 3 | 5 | 4 | 7 | 4 | 7 | 2 | 1 |
| 1956 | 41 | 2 | 2 | 2 | 4 | 4 | 10 | 2 | 5 | 4 | 3 | 2 | 1 |
| 1955 | 49 | 18 | 5 | 5 | 1 | 4 | 2 | 2 | 2 | 2 | 4 | 2 | 2 |
| 1954 | 56 | 2 | 6 | 6 | 8 | 2 | 3 | 2 | 3 | 5 | 5 | 9 | 5 |
| 1953 | 17 | 3 | 1 | 1 | 2 | 2 | 3 | 2 | 1 | 2 | |||
| 1952 | 47 | 5 | 11 | 6 | 8 | 4 | 1 | 1 | 4 | 4 | 3 | ||
| 1951 | 15 | 3 | 1 | 1 | 1 | 2 | 7 | ||||||
| 1950 | 6 | 1 | 2 | 2 | 1 | ||||||||
| 2564 |