| Year | Count |
|---|---|
| 1913 | 12 |
| 1915 | 10 |
| 1917 | 10 |
| 1918 | 24 |
| 1919 | 16 |
| 1920 | 5 |
| 1921 | 30 |
| 1922 | 19 |
| 1923 | 5 |
| 1924 | 11 |
| 1925 | 37 |
| 1927 | 17 |
| 1928 | 28 |
| 1929 | 19 |
| 1930 | 31 |
| 1932 | 5 |
| 1933 | 10 |
| 1934 | 10 |
| 1935 | 15 |
| 1936 | 5 |
| 1938 | 5 |
| 1940 | 5 |
| 1942 | 5 |
| 1946 | 15 |
| 1947 | 12 |
| 1955 | 15 |
| 1957 | 10 |
| 1966 | 5 |
| 1968 | 7 |
| 1969 | 32 |
| 1970 | 20 |
| 1971 | 13 |
| 1972 | 6 |
| 1974 | 6 |
| 1975 | 11 |
| 1976 | 5 |
| 1987 | 6 |
| 1993 | 5 |