| Year | Count |
|---|---|
| 1915 | 10 |
| 1916 | 5 |
| 1919 | 17 |
| 1920 | 5 |
| 1921 | 12 |
| 1923 | 10 |
| 1924 | 17 |
| 1925 | 24 |
| 1926 | 19 |
| 1927 | 18 |
| 1928 | 6 |
| 1929 | 27 |
| 1930 | 40 |
| 1931 | 20 |
| 1932 | 24 |
| 1933 | 19 |
| 1934 | 10 |
| 1936 | 5 |
| 1937 | 10 |
| 1938 | 10 |
| 1940 | 16 |
| 1941 | 5 |
| 1943 | 12 |
| 1944 | 5 |
| 1946 | 5 |
| 1948 | 18 |
| 1950 | 12 |
| 1951 | 10 |
| 1953 | 14 |
| 1955 | 5 |
| 1958 | 10 |
| 1961 | 5 |
| 1964 | 10 |
| 1965 | 10 |