| Year | Count |
|---|---|
| 1913 | 6 |
| 1915 | 9 |
| 1916 | 6 |
| 1917 | 11 |
| 1918 | 6 |
| 1919 | 11 |
| 1920 | 11 |
| 1921 | 11 |
| 1922 | 24 |
| 1923 | 20 |
| 1924 | 20 |
| 1925 | 16 |
| 1926 | 12 |
| 1927 | 14 |
| 1928 | 22 |
| 1929 | 24 |
| 1930 | 14 |
| 1932 | 7 |
| 1933 | 5 |
| 1935 | 5 |
| 1937 | 8 |
| 1938 | 6 |
| 1945 | 5 |
| 1946 | 8 |
| 1948 | 5 |
| 1950 | 5 |
| 1951 | 8 |
| 1953 | 5 |
| 1954 | 6 |
| 1956 | 7 |
| 1960 | 10 |
| 1962 | 5 |
| 1963 | 6 |
| 1965 | 6 |
| 1971 | 5 |