| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1960 | 77 | 2 | 15 | 11 | 8 | 3 | 4 | 2 | 3 | 1 | 1 | 16 | 11 |
| 1959 | 34 | 4 | 2 | 6 | 5 | 4 | 5 | 5 | 3 | ||||
| 1958 | 43 | 6 | 5 | 5 | 6 | 3 | 3 | 3 | 2 | 6 | 2 | 2 | |
| 1957 | 61 | 9 | 4 | 9 | 9 | 5 | 9 | 9 | 3 | 4 | |||
| 1956 | 107 | 6 | 4 | 9 | 8 | 3 | 6 | 7 | 7 | 12 | 11 | 17 | 17 |
| 1955 | 80 | 6 | 5 | 5 | 8 | 8 | 5 | 8 | 9 | 4 | 3 | 9 | 10 |
| 1954 | 82 | 9 | 9 | 13 | 5 | 9 | 6 | 4 | 4 | 8 | 7 | 2 | 6 |
| 1953 | 72 | 7 | 5 | 7 | 3 | 3 | 8 | 7 | 2 | 8 | 5 | 12 | 5 |
| 1952 | 32 | 1 | 3 | 3 | 5 | 4 | 2 | 4 | 4 | 6 | |||
| 1951 | 56 | 5 | 6 | 12 | 7 | 7 | 3 | 3 | 2 | 3 | 2 | 6 | |
| 1950 | 39 | 3 | 4 | 5 | 4 | 4 | 4 | 1 | 6 | 8 | |||
| 1949 | 15 | 2 | 2 | 1 | 1 | 3 | 1 | 2 | 1 | 2 | |||
| 1948 | 4 | 1 | 1 | 1 | 1 | ||||||||
| 1947 | 6 | 1 | 2 | 2 | 1 | ||||||||
| 1946 | 4 | 2 | 2 |
