| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1978 | 116 | 15 | 16 | 11 | 12 | 9 | 7 | 11 | 8 | 6 | 15 | 6 | |
| 1977 | 75 | 1 | 10 | 11 | 8 | 7 | 9 | 12 | 11 | 6 | |||
| 1976 | 9 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | ||||
| 1975 | 23 | 1 | 1 | 5 | 2 | 2 | 6 | 3 | 1 | 2 | |||
| 1974 | 68 | 6 | 5 | 15 | 5 | 6 | 7 | 1 | 5 | 6 | 6 | 4 | 2 |
| 1973 | 95 | 11 | 10 | 13 | 6 | 8 | 7 | 2 | 2 | 7 | 9 | 9 | 11 |
| 1972 | 65 | 6 | 14 | 9 | 10 | 4 | 1 | 3 | 2 | 8 | 5 | 3 | |
| 1971 | 86 | 10 | 7 | 8 | 9 | 10 | 4 | 6 | 6 | 7 | 5 | 5 | 9 |
| 1970 | 53 | 6 | 11 | 10 | 8 | 3 | 2 | 1 | 3 | 3 | 6 | ||
| 1969 | 56 | 2 | 2 | 6 | 2 | 3 | 3 | 9 | 4 | 3 | 9 | 8 | 5 |
| 1968 | 37 | 4 | 12 | 2 | 2 | 4 | 2 | 2 | 4 | 1 | 1 | 3 | |
| 1967 | 28 | 3 | 1 | 1 | 7 | 2 | 3 | 1 | 3 | 1 | 1 | 5 | |
| 1966 | 6 | 1 | 2 | 1 | 1 | 1 | |||||||
| 1965 | - | ||||||||||||
| 1964 | 1 | 1 | |||||||||||
| 1963 | - | ||||||||||||
| 1962 | 1 | 1 | |||||||||||
| 1961 | 4 | 4 | |||||||||||
| 1960 | 1 | 1 | |||||||||||
| 724 |
