| Year | Count |
|---|---|
| 1911 | 6 |
| 1913 | 12 |
| 1915 | 16 |
| 1916 | 9 |
| 1917 | 10 |
| 1918 | 12 |
| 1919 | 14 |
| 1920 | 13 |
| 1921 | 5 |
| 1922 | 28 |
| 1923 | 22 |
| 1924 | 18 |
| 1925 | 20 |
| 1926 | 24 |
| 1927 | 16 |
| 1928 | 12 |
| 1929 | 18 |
| 1930 | 12 |
| 1931 | 14 |
| 1933 | 6 |
| 1934 | 5 |
| 1935 | 10 |
| 1936 | 7 |
| 1937 | 8 |
| 1938 | 7 |
| 1939 | 5 |
| 1941 | 6 |
| 1942 | 7 |
| 1943 | 6 |
| 1948 | 5 |
| 1949 | 6 |
| 1950 | 6 |
| 1953 | 9 |
| 1955 | 5 |
| 1957 | 16 |
| 1959 | 12 |
| 1960 | 10 |
| 1962 | 5 |