| Year | Count |
|---|---|
| 1912 | 7 |
| 1913 | 13 |
| 1914 | 16 |
| 1915 | 21 |
| 1916 | 16 |
| 1917 | 18 |
| 1918 | 17 |
| 1919 | 11 |
| 1920 | 13 |
| 1921 | 13 |
| 1922 | 18 |
| 1923 | 11 |
| 1924 | 16 |
| 1925 | 17 |
| 1926 | 13 |
| 1927 | 10 |
| 1928 | 12 |
| 1929 | 10 |
| 1930 | 8 |
| 1932 | 12 |
| 1933 | 11 |
| 1934 | 6 |
| 1935 | 6 |
| 1936 | 9 |
| 1937 | 10 |
| 1939 | 11 |
| 1940 | 5 |
| 1941 | 6 |
| 1942 | 11 |
| 1943 | 10 |
| 1945 | 8 |
| 1946 | 5 |
| 1947 | 6 |
| 1948 | 10 |
| 1949 | 6 |
| 1952 | 10 |
| 1955 | 6 |
| 1956 | 8 |
| 1957 | 5 |
| 1958 | 5 |
| 1961 | 6 |
| 1969 | 7 |
| 1974 | 5 |
| 1982 | 5 |
| 1985 | 6 |
| 1989 | 6 |
| 1993 | 5 |
| 1995 | 5 |