| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1987 | 64 | 4 | 21 | 15 | 17 | 7 | |||||||
| 1986 | 8 | 1 | 3 | 3 | 1 | ||||||||
| 1985 | 198 | 24 | 12 | 16 | 20 | 17 | 17 | 14 | 8 | 17 | 25 | 25 | 3 |
| 1984 | 145 | 5 | 1 | 7 | 23 | 18 | 23 | 23 | 10 | 20 | 9 | 6 | |
| 1983 | 107 | 17 | 16 | 24 | 18 | 7 | 15 | 10 | |||||
| 1982 | 110 | 21 | 1 | 2 | 11 | 4 | 30 | 20 | 21 | ||||
| 1981 | 1 | 1 | |||||||||||
| 1980 | 10 | 4 | 2 | 1 | 3 | ||||||||
| 1979 | 28 | 1 | 4 | 1 | 7 | 8 | 5 | 2 | |||||
| 1978 | 149 | 15 | 15 | 19 | 18 | 18 | 11 | 13 | 12 | 10 | 9 | 7 | 2 |
| 1977 | 214 | 23 | 16 | 23 | 8 | 20 | 19 | 19 | 25 | 16 | 6 | 21 | 18 |
| 1976 | 111 | 10 | 11 | 15 | 17 | 10 | 1 | 4 | 6 | 10 | 1 | 16 | 10 |
| 1975 | 159 | 17 | 13 | 11 | 20 | 10 | 11 | 18 | 16 | 7 | 10 | 15 | 11 |
| 1974 | 135 | 13 | 10 | 7 | 9 | 11 | 17 | 14 | 12 | 14 | 8 | 11 | 9 |
| 1973 | 189 | 15 | 18 | 15 | 15 | 15 | 14 | 16 | 12 | 15 | 17 | 18 | 19 |
| 1972 | 59 | 3 | 1 | 2 | 2 | 1 | 4 | 2 | 2 | 10 | 15 | 17 | |
| 1971 | 122 | 10 | 7 | 10 | 12 | 6 | 12 | 16 | 12 | 7 | 11 | 11 | 8 |
| 1970 | 105 | 5 | 13 | 13 | 18 | 1 | 1 | 13 | 14 | 11 | 10 | 6 | |
| 1914 |
