| Year | Count |
|---|---|
| 1912 | 6 |
| 1914 | 17 |
| 1919 | 8 |
| 1920 | 19 |
| 1921 | 8 |
| 1922 | 6 |
| 1923 | 7 |
| 1924 | 14 |
| 1925 | 17 |
| 1926 | 18 |
| 1927 | 14 |
| 1928 | 18 |
| 1929 | 15 |
| 1930 | 18 |
| 1931 | 20 |
| 1932 | 21 |
| 1933 | 12 |
| 1934 | 12 |
| 1935 | 6 |
| 1938 | 9 |
| 1940 | 12 |
| 1941 | 8 |
| 1946 | 6 |
| 1949 | 5 |
| 1951 | 14 |
| 1952 | 7 |
| 1953 | 12 |
| 1954 | 6 |
| 1955 | 17 |
| 1956 | 7 |
| 1959 | 10 |
| 1960 | 11 |
| 1961 | 10 |
| 1968 | 7 |
| 1970 | 5 |
| 1981 | 6 |