| Year | Count |
|---|---|
| 1911 | 14 |
| 1912 | 25 |
| 1913 | 30 |
| 1914 | 57 |
| 1915 | 73 |
| 1916 | 50 |
| 1917 | 84 |
| 1918 | 68 |
| 1919 | 60 |
| 1920 | 74 |
| 1921 | 90 |
| 1922 | 93 |
| 1923 | 75 |
| 1924 | 83 |
| 1925 | 70 |
| 1926 | 39 |
| 1927 | 56 |
| 1928 | 50 |
| 1929 | 56 |
| 1930 | 26 |
| 1931 | 32 |
| 1932 | 19 |
| 1933 | 5 |
| 1936 | 11 |
| 1938 | 6 |
| 1953 | 6 |
| 1955 | 5 |
| 1956 | 16 |
| 1957 | 10 |
| 1958 | 6 |
| 1960 | 22 |
| 1961 | 6 |
| 1962 | 6 |
| 1964 | 12 |
| 1965 | 5 |
| 1966 | 7 |
| 1967 | 5 |
| 1968 | 7 |
| 1969 | 5 |
| 1972 | 12 |
| 1973 | 7 |
| 1974 | 12 |
| 1975 | 11 |
| 1976 | 13 |
| 1979 | 5 |
| 1980 | 6 |
| 1981 | 7 |
| 1984 | 9 |
| 1986 | 5 |
| 1988 | 5 |
| 1991 | 8 |
| 1993 | 6 |
| 1994 | 12 |
| 1995 | 7 |
| 1998 | 5 |
| 1999 | 12 |
| 2006 | 7 |
| 2010 | 5 |