| Year | Count |
|---|---|
| 1912 | 18 |
| 1913 | 10 |
| 1914 | 21 |
| 1915 | 24 |
| 1916 | 28 |
| 1917 | 56 |
| 1918 | 71 |
| 1919 | 48 |
| 1920 | 56 |
| 1921 | 70 |
| 1922 | 70 |
| 1923 | 48 |
| 1924 | 44 |
| 1925 | 35 |
| 1926 | 46 |
| 1927 | 46 |
| 1928 | 40 |
| 1929 | 20 |
| 1930 | 35 |
| 1931 | 43 |
| 1932 | 36 |
| 1933 | 37 |
| 1935 | 7 |
| 1936 | 25 |
| 1937 | 12 |
| 1938 | 9 |
| 1939 | 11 |
| 1940 | 19 |
| 1941 | 33 |
| 1942 | 14 |
| 1943 | 18 |
| 1944 | 20 |
| 1945 | 5 |
| 1947 | 21 |
| 1948 | 9 |
| 1952 | 12 |
| 1956 | 24 |
| 1958 | 12 |