| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1975 | 16 | 1 | 1 | 6 | 1 | 2 | 4 | 1 | |||||
| 1974 | 16 | 5 | 11 | ||||||||||
| 1973 | 38 | 18 | 1 | 3 | 1 | 4 | 5 | 1 | 1 | 3 | 1 | ||
| 1972 | 111 | 12 | 11 | 9 | 11 | 16 | 8 | 11 | 5 | 12 | 5 | 7 | 4 |
| 1971 | 101 | 3 | 9 | 9 | 15 | 4 | 9 | 7 | 16 | 7 | 11 | 5 | 6 |
| 1970 | 83 | 1 | 4 | 11 | 10 | 14 | 7 | 10 | 9 | 11 | 2 | 4 | |
| 1969 | 17 | 10 | 4 | 3 | |||||||||
| 1968 | 63 | 4 | 3 | 9 | 12 | 8 | 14 | 9 | 4 | ||||
| 1967 | 1 | 1 | |||||||||||
| 1966 | 78 | 7 | 5 | 8 | 11 | 7 | 9 | 6 | 5 | 5 | 3 | 10 | 2 |
| 1965 | 131 | 9 | 16 | 16 | 11 | 12 | 10 | 12 | 9 | 9 | 13 | 9 | 5 |
| 1964 | 40 | 11 | 17 | 8 | 4 | ||||||||
| 1963 | 123 | 2 | 8 | 11 | 14 | 15 | 12 | 13 | 14 | 10 | 8 | 16 | |
| 1962 | 96 | 10 | 13 | 18 | 11 | 2 | 1 | 10 | 13 | 7 | 11 | ||
| 1961 | 146 | 7 | 15 | 15 | 18 | 16 | 11 | 13 | 15 | 9 | 17 | 10 | |
| 1060 |
