| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1978 | 22 | 7 | 3 | 2 | 4 | 5 | 1 | ||||||
| 1977 | 78 | 3 | 19 | 11 | 5 | 3 | 22 | 5 | 8 | 2 | |||
| 1976 | 13 | 1 | 1 | 1 | 4 | 2 | 4 | ||||||
| 1975 | 25 | 2 | 3 | 6 | 2 | 5 | 7 | ||||||
| 1974 | 45 | 7 | 4 | 7 | 6 | 5 | 4 | 1 | 4 | 2 | 2 | 2 | 1 |
| 1973 | 51 | 3 | 3 | 5 | 3 | 7 | 4 | 4 | 4 | 3 | 4 | 5 | 6 |
| 1972 | 68 | 16 | 8 | 5 | 16 | 1 | 5 | 6 | 2 | 2 | 1 | 6 | |
| 1971 | 28 | 3 | 4 | 1 | 2 | 2 | 2 | 5 | 6 | 3 | |||
| 1970 | 30 | 7 | 1 | 4 | 2 | 2 | 2 | 5 | 4 | 3 | |||
| 1969 | 41 | 5 | 3 | 3 | 5 | 8 | 3 | 5 | 6 | 2 | 1 | ||
| 1968 | 46 | 3 | 4 | 5 | 3 | 13 | 5 | 6 | 4 | 2 | 1 | ||
| 1967 | 76 | 6 | 9 | 8 | 11 | 10 | 4 | 3 | 3 | 7 | 6 | 4 | 5 |
| 1966 | 96 | 13 | 13 | 14 | 6 | 10 | 7 | 5 | 4 | 5 | 5 | 7 | 7 |
| 1965 | 156 | 10 | 9 | 16 | 18 | 14 | 13 | 11 | 9 | 7 | 14 | 18 | 17 |
| 1964 | 140 | 14 | 15 | 16 | 1 | 2 | 10 | 12 | 16 | 18 | 15 | 11 | 10 |
| 1963 | 119 | 4 | 3 | 6 | 1 | 3 | 10 | 17 | 23 | 13 | 15 | 14 | 10 |
| 1962 | 86 | 9 | 11 | 15 | 5 | 11 | 8 | 6 | 9 | 2 | 4 | 4 | 2 |
| 1961 | 87 | 11 | 7 | 11 | 7 | 2 | 7 | 8 | 10 | 12 | 7 | 3 | 2 |
| 1960 | 66 | 8 | 6 | 8 | 6 | 7 | 10 | 3 | 2 | 3 | 4 | 2 | 7 |
| 1959 | 49 | 3 | 7 | 6 | 7 | 1 | 1 | 3 | 3 | 7 | 7 | 4 | |
| 1958 | 40 | 1 | 11 | 9 | 2 | 3 | 3 | 2 | 3 | 4 | 2 | ||
| 1957 | 4 | 1 | 1 | 1 | 1 | ||||||||
| 1366 |
