| Year | Count |
|---|---|
| 1913 | 12 |
| 1914 | 10 |
| 1915 | 12 |
| 1924 | 8 |
| 1925 | 10 |
| 1926 | 6 |
| 1927 | 12 |
| 1928 | 16 |
| 1929 | 12 |
| 1934 | 6 |
| 1936 | 7 |
| 1939 | 5 |
| 1954 | 6 |
| 1959 | 10 |
| 1968 | 18 |
| 1969 | 23 |
| 1970 | 22 |
| 1971 | 20 |
| 1972 | 31 |
| 1973 | 12 |
| 1974 | 10 |
| 1975 | 20 |
| 1976 | 38 |
| 1977 | 22 |
| 1978 | 51 |
| 1979 | 45 |
| 1980 | 37 |
| 1981 | 66 |
| 1982 | 54 |
| 1983 | 36 |
| 1984 | 42 |
| 1985 | 49 |
| 1986 | 40 |
| 1987 | 25 |
| 1989 | 24 |
| 1990 | 10 |
| 1991 | 10 |
| 1992 | 5 |
| 1993 | 7 |
| 1994 | 6 |
| 1995 | 17 |
| 2017 | 5 |