| Year | Count |
|---|---|
| 1913 | 19 |
| 1914 | 13 |
| 1915 | 28 |
| 1916 | 33 |
| 1917 | 24 |
| 1918 | 28 |
| 1919 | 42 |
| 1920 | 31 |
| 1921 | 64 |
| 1922 | 42 |
| 1923 | 27 |
| 1924 | 39 |
| 1925 | 32 |
| 1926 | 29 |
| 1927 | 10 |
| 1928 | 20 |
| 1929 | 18 |
| 1930 | 16 |
| 1931 | 53 |
| 1932 | 20 |
| 1933 | 54 |
| 1934 | 44 |
| 1935 | 44 |
| 1936 | 34 |
| 1937 | 15 |
| 1938 | 16 |
| 1939 | 27 |
| 1940 | 31 |
| 1941 | 24 |
| 1942 | 39 |
| 1944 | 11 |
| 1945 | 31 |
| 1946 | 45 |
| 1948 | 31 |
| 1949 | 20 |
| 1951 | 44 |
| 1952 | 44 |
| 1953 | 38 |
| 1954 | 41 |
| 1955 | 35 |
| 1956 | 27 |
| 1957 | 15 |
| 1958 | 17 |
| 1959 | 5 |
| 1961 | 22 |
| 1962 | 5 |
| 1963 | 27 |
| 1965 | 30 |
| 1966 | 10 |
| 1967 | 17 |
| 1968 | 15 |
| 1969 | 10 |
| 1970 | 12 |
| 1971 | 5 |
| 1972 | 17 |
| 1973 | 14 |
| 1974 | 16 |
| 1978 | 6 |
| 1984 | 10 |
| 1987 | 6 |
| 1988 | 12 |
| 1990 | 10 |
| 1991 | 6 |
| 1995 | 5 |
| 1998 | 6 |