| Year | Count |
|---|---|
| 1912 | 18 |
| 1913 | 18 |
| 1914 | 20 |
| 1916 | 6 |
| 1917 | 18 |
| 1918 | 18 |
| 1919 | 20 |
| 1920 | 18 |
| 1921 | 16 |
| 1923 | 6 |
| 1925 | 7 |
| 1932 | 5 |
| 1969 | 5 |
| 1971 | 6 |
| 1973 | 5 |
| 1974 | 12 |
| 1975 | 74 |
| 1976 | 43 |
| 1977 | 23 |
| 1978 | 49 |
| 1979 | 38 |
| 1980 | 7 |
| 1981 | 48 |
| 1982 | 40 |
| 1983 | 25 |
| 1984 | 17 |
| 1985 | 12 |
| 1986 | 42 |
| 1987 | 11 |
| 1988 | 25 |
| 1994 | 10 |