| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1975 | 45 | 1 | 1 | 1 | 2 | 6 | 23 | 11 | |||||
| 1974 | 45 | 13 | 9 | 6 | 5 | 9 | 2 | 1 | |||||
| 1973 | 36 | 5 | 3 | 7 | 7 | 6 | 8 | ||||||
| 1972 | 140 | 18 | 15 | 17 | 16 | 16 | 11 | 1 | 5 | 13 | 16 | 12 | |
| 1971 | 54 | 2 | 5 | 5 | 7 | 4 | 2 | 5 | 5 | 2 | 17 | ||
| 1970 | 7 | 3 | 2 | 1 | 1 | ||||||||
| 1969 | - | ||||||||||||
| 1968 | 49 | 6 | 5 | 10 | 11 | 4 | 5 | 4 | 3 | 1 | |||
| 1967 | 81 | 13 | 5 | 6 | 7 | 12 | 1 | 1 | 4 | 8 | 6 | 9 | 9 |
| 1966 | 52 | 1 | 2 | 2 | 7 | 2 | 1 | 3 | 3 | 3 | 3 | 13 | 12 |
| 1965 | 60 | 10 | 6 | 5 | 4 | 9 | 9 | 4 | 6 | 1 | 4 | 2 | |
| 1964 | 39 | 2 | 2 | 6 | 9 | 4 | 4 | 5 | 7 | ||||
| 1963 | 127 | 5 | 4 | 5 | 6 | 7 | 15 | 24 | 10 | 20 | 14 | 10 | 7 |
| 1962 | 55 | 11 | 3 | 6 | 8 | 6 | 6 | 1 | 4 | 3 | 2 | 5 | |
| 1961 | 123 | 6 | 9 | 12 | 12 | 8 | 10 | 4 | 10 | 9 | 16 | 13 | 14 |
| 1960 | 157 | 16 | 16 | 11 | 10 | 16 | 17 | 8 | 11 | 12 | 14 | 13 | 13 |
| 1959 | 81 | 5 | 4 | 3 | 4 | 4 | 12 | 12 | 20 | 17 | |||
| 1958 | 41 | 1 | 4 | 8 | 6 | 1 | 1 | 4 | 6 | 6 | 4 | ||
| 1957 | 44 | 3 | 7 | 8 | 1 | 5 | 4 | 10 | 6 | ||||
| 1956 | 29 | 9 | 9 | 5 | 2 | 2 | 2 | ||||||
| 1955 | 26 | 7 | 3 | 4 | 2 | 1 | 1 | 1 | 4 | 2 | 1 | ||
| 1954 | 67 | 2 | 3 | 6 | 9 | 12 | 6 | 4 | 7 | 3 | 5 | 10 | |
| 1953 | 30 | 10 | 9 | 4 | 4 | 1 | 1 | 1 | |||||
| 1952 | 7 | 3 | 1 | 1 | 2 | ||||||||
| 1395 |
