| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1969 | 24 | 1 | 1 | 1 | 10 | 9 | 2 | ||||||
| 1968 | 28 | 6 | 1 | 2 | 2 | 1 | 4 | 5 | 4 | 1 | 1 | 1 | |
| 1967 | 82 | 9 | 10 | 4 | 2 | 5 | 12 | 17 | 14 | 2 | 4 | 3 | |
| 1966 | 101 | 13 | 8 | 7 | 7 | 7 | 14 | 4 | 11 | 3 | 7 | 10 | 10 |
| 1965 | 46 | 8 | 5 | 3 | 8 | 5 | 2 | 1 | 3 | 4 | 2 | 5 | |
| 1964 | 30 | 1 | 5 | 11 | 8 | 5 | |||||||
| 1963 | 27 | 3 | 4 | 6 | 6 | 1 | 2 | 2 | 3 | ||||
| 1962 | 23 | 1 | 7 | 6 | 1 | 2 | 2 | 2 | 1 | 1 | |||
| 1961 | 118 | 10 | 5 | 2 | 1 | 8 | 23 | 20 | 20 | 16 | 9 | 4 | |
| 1960 | 23 | 3 | 13 | 3 | 2 | 2 | |||||||
| 1959 | 57 | 2 | 3 | 1 | 3 | 2 | 11 | 22 | 11 | 2 | |||
| 1958 | 51 | 4 | 3 | 3 | 7 | 17 | 6 | 4 | 4 | 2 | 1 | ||
| 1957 | 86 | 3 | 11 | 2 | 10 | 9 | 8 | 10 | 3 | 11 | 9 | 10 | |
| 1956 | 20 | 3 | 1 | 6 | 1 | 2 | 3 | 1 | 2 | 1 | |||
| 1955 | 19 | 2 | 5 | 3 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | ||
| 1954 | 60 | 3 | 4 | 4 | 5 | 1 | 2 | 1 | 1 | 1 | 12 | 20 | 6 |
| 1953 | 61 | 1 | 3 | 1 | 3 | 6 | 2 | 7 | 17 | 12 | 4 | 3 | 2 |
| 1952 | 60 | 5 | 1 | 2 | 5 | 7 | 1 | 8 | 6 | 6 | 8 | 7 | 4 |
| 1951 | 45 | 11 | 3 | 4 | 7 | 3 | 5 | 3 | 4 | 3 | 2 | ||
| 1950 | 51 | 5 | 8 | 7 | 1 | 7 | 10 | 4 | 9 | ||||
| 1012 |