| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1982 | 1 | 1 | |||||||||||
| 1981 | 64 | 1 | 3 | 6 | 7 | 4 | 6 | 5 | 9 | 4 | 9 | 8 | 2 |
| 1980 | 78 | 8 | 7 | 4 | 6 | 4 | 7 | 3 | 6 | 4 | 12 | 12 | 5 |
| 1979 | 28 | 6 | 4 | 3 | 2 | 2 | 2 | 1 | 4 | 4 | |||
| 1978 | 73 | 6 | 5 | 8 | 9 | 9 | 10 | 4 | 9 | 8 | 3 | 2 | |
| 1977 | 107 | 12 | 9 | 12 | 14 | 15 | 12 | 8 | 6 | 4 | 4 | 6 | 5 |
| 1976 | 91 | 10 | 6 | 7 | 1 | 8 | 8 | 8 | 9 | 10 | 7 | 11 | 6 |
| 1975 | 58 | 7 | 5 | 1 | 3 | 1 | 2 | 6 | 6 | 11 | 6 | 10 | |
| 1974 | 83 | 3 | 12 | 9 | 4 | 12 | 5 | 7 | 6 | 9 | 5 | 5 | 6 |
| 1973 | 121 | 12 | 8 | 9 | 8 | 9 | 11 | 8 | 10 | 9 | 11 | 16 | 10 |
| 1972 | 18 | 2 | 3 | 2 | 1 | 4 | 3 | 1 | 2 | ||||
| 1971 | 31 | 4 | 2 | 3 | 4 | 1 | 2 | 4 | 1 | 4 | 2 | 3 | 1 |
| 1970 | 190 | 13 | 12 | 15 | 17 | 15 | 14 | 14 | 27 | 22 | 19 | 17 | 5 |
| 1969 | 168 | 25 | 14 | 15 | 18 | 11 | 8 | 15 | 14 | 11 | 13 | 12 | 12 |
| 1968 | 169 | 15 | 17 | 16 | 6 | 12 | 14 | 17 | 18 | 14 | 18 | 14 | 8 |
| 1967 | 152 | 11 | 8 | 9 | 10 | 11 | 10 | 17 | 19 | 15 | 12 | 16 | 14 |
| 1966 | 151 | 13 | 11 | 11 | 14 | 13 | 13 | 11 | 11 | 13 | 12 | 15 | 14 |
| 1965 | 204 | 20 | 20 | 20 | 17 | 13 | 16 | 18 | 18 | 17 | 16 | 17 | 12 |
| 1964 | 248 | 19 | 19 | 16 | 16 | 18 | 25 | 24 | 23 | 23 | 24 | 19 | 22 |
| 1963 | 275 | 22 | 20 | 24 | 26 | 27 | 22 | 26 | 21 | 23 | 19 | 22 | 23 |
| 1962 | 225 | 19 | 21 | 26 | 14 | 19 | 24 | 20 | 20 | 17 | 16 | 19 | 10 |
| 1961 | 259 | 18 | 18 | 26 | 25 | 25 | 25 | 22 | 21 | 22 | 20 | 19 | 18 |
| 1960 | 194 | 18 | 14 | 19 | 16 | 11 | 15 | 13 | 17 | 20 | 16 | 16 | 19 |
| 1959 | 142 | 15 | 14 | 13 | 15 | 11 | 12 | 14 | 10 | 13 | 9 | 8 | 8 |
| 1958 | - | ||||||||||||
| 1957 | - | ||||||||||||
| 1956 | - | ||||||||||||
| 1955 | - | ||||||||||||
| 1954 | 1 | 1 | |||||||||||
| 1953 | - | ||||||||||||
| 1952 | - | ||||||||||||
| 1951 | - | ||||||||||||
| 1950 | 1 | 1 |