| Year | Count |
|---|---|
| 1916 | 6 |
| 1919 | 15 |
| 1920 | 8 |
| 1921 | 14 |
| 1922 | 30 |
| 1923 | 29 |
| 1924 | 7 |
| 1925 | 24 |
| 1926 | 7 |
| 1927 | 20 |
| 1928 | 6 |
| 1929 | 22 |
| 1930 | 8 |
| 1931 | 6 |
| 1932 | 11 |
| 1933 | 12 |
| 1934 | 7 |
| 1935 | 12 |
| 1936 | 8 |
| 1937 | 8 |
| 1938 | 5 |
| 1939 | 7 |
| 1940 | 5 |
| 1941 | 16 |
| 1942 | 7 |
| 1943 | 5 |
| 1945 | 5 |
| 1946 | 10 |
| 1947 | 12 |
| 1948 | 8 |
| 1949 | 5 |
| 1951 | 6 |
| 1953 | 5 |
| 1955 | 7 |
| 1964 | 6 |
| 1968 | 5 |
| 1970 | 5 |