| Year | Count |
|---|---|
| 1911 | 5 |
| 1912 | 5 |
| 1915 | 6 |
| 1917 | 36 |
| 1918 | 30 |
| 1919 | 33 |
| 1920 | 36 |
| 1921 | 29 |
| 1922 | 51 |
| 1924 | 53 |
| 1925 | 30 |
| 1926 | 60 |
| 1927 | 35 |
| 1928 | 9 |
| 1929 | 13 |
| 1932 | 31 |
| 1933 | 16 |
| 1934 | 26 |
| 1935 | 20 |
| 1936 | 27 |
| 1937 | 20 |
| 1938 | 40 |
| 1939 | 22 |
| 1940 | 10 |
| 1941 | 7 |
| 1942 | 6 |
| 1943 | 7 |
| 1944 | 10 |
| 1945 | 8 |
| 1948 | 16 |
| 1949 | 14 |
| 1950 | 10 |
| 1951 | 12 |
| 1952 | 10 |
| 1955 | 12 |
| 1961 | 10 |