| Year | Count |
|---|---|
| 1910 | 6 |
| 1911 | 21 |
| 1912 | 12 |
| 1913 | 23 |
| 1914 | 29 |
| 1915 | 31 |
| 1916 | 72 |
| 1917 | 56 |
| 1918 | 78 |
| 1919 | 21 |
| 1920 | 39 |
| 1921 | 58 |
| 1922 | 42 |
| 1923 | 22 |
| 1924 | 25 |
| 1925 | 27 |
| 1926 | 27 |
| 1927 | 6 |
| 1928 | 25 |
| 1929 | 5 |
| 1930 | 6 |
| 1931 | 14 |
| 1936 | 6 |
| 1937 | 5 |
| 1939 | 5 |
| 1940 | 5 |
| 1941 | 6 |
| 1942 | 12 |
| 1943 | 10 |
| 1947 | 33 |
| 1948 | 27 |
| 1949 | 6 |
| 1950 | 7 |
| 1952 | 32 |
| 1953 | 31 |
| 1954 | 8 |
| 1955 | 15 |
| 1956 | 5 |
| 1957 | 5 |
| 1958 | 14 |
| 1977 | 5 |
| 1980 | 6 |
| 1981 | 15 |
| 1983 | 13 |
| 1985 | 10 |
| 1986 | 29 |
| 1987 | 26 |
| 1988 | 35 |
| 1989 | 18 |
| 1990 | 98 |
| 1991 | 6 |
| 1992 | 25 |
| 1993 | 39 |
| 1994 | 5 |
| 1995 | 17 |
| 1996 | 8 |
| 1997 | 7 |
| 1998 | 21 |
| 2000 | 5 |
| 2004 | 12 |
| 2005 | 10 |