| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1984 | 3 | 2 | 1 | ||||||||||
| 1983 | 9 | 1 | 2 | 2 | 1 | 3 | |||||||
| 1982 | 11 | 1 | 3 | 1 | 1 | 2 | 1 | 2 | |||||
| 1981 | 19 | 1 | 3 | 2 | 2 | 2 | 3 | 3 | 1 | 1 | 1 | ||
| 1980 | 21 | 2 | 3 | 1 | 5 | 2 | 3 | 1 | 1 | 2 | 1 | ||
| 1979 | 20 | 1 | 2 | 2 | 2 | 1 | 3 | 1 | 4 | 2 | 1 | 1 | |
| 1978 | 13 | 3 | 1 | 4 | 2 | 1 | 2 | ||||||
| 1977 | 26 | 1 | 2 | 1 | 2 | 3 | 1 | 2 | 3 | 4 | 1 | 4 | 2 |
| 1976 | 17 | 1 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | ||
| 1975 | 10 | 1 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | ||||
| 1974 | 9 | 2 | 1 | 1 | 1 | 2 | 2 | ||||||
| 1973 | 10 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | ||||
| 1972 | 8 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | |||||
| 1971 | 13 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| 1970 | 11 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | |||
| 1969 | 10 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | |||
| 1968 | 12 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 3 | 1 | |||
| 1967 | 13 | 1 | 1 | 1 | 1 | 2 | 1 | 3 | 1 | 1 | 1 | ||
| 1966 | 19 | 2 | 1 | 4 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | |
| 1965 | 14 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 2 | 1 | 2 | ||
| 1964 | 15 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | |
| 1963 | 15 | 1 | 2 | 1 | 1 | 2 | 3 | 1 | 1 | 1 | 1 | 1 | |
| 1962 | 11 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| 309 |
