| Year | Count |
|---|---|
| 1910 | 9 |
| 1911 | 12 |
| 1912 | 16 |
| 1913 | 12 |
| 1914 | 15 |
| 1915 | 15 |
| 1916 | 29 |
| 1917 | 15 |
| 1918 | 9 |
| 1919 | 15 |
| 1920 | 10 |
| 1921 | 7 |
| 1922 | 40 |
| 1923 | 36 |
| 1924 | 24 |
| 1925 | 28 |
| 1926 | 34 |
| 1927 | 20 |
| 1928 | 18 |
| 1930 | 12 |
| 1933 | 10 |
| 1936 | 5 |
| 1938 | 6 |
| 1939 | 5 |
| 1940 | 5 |
| 1941 | 5 |
| 1942 | 6 |
| 1943 | 5 |
| 1945 | 10 |
| 1946 | 6 |
| 1949 | 6 |
| 1950 | 9 |
| 1956 | 13 |
| 1957 | 14 |
| 1958 | 10 |
| 1959 | 18 |
| 1961 | 6 |
| 1962 | 5 |
| 1965 | 6 |
| 1990 | 6 |
| 1991 | 6 |
| 1994 | 6 |
| 1995 | 10 |
| 1996 | 6 |