| Year | Count |
|---|---|
| 1911 | 5 |
| 1912 | 12 |
| 1913 | 16 |
| 1914 | 10 |
| 1915 | 12 |
| 1916 | 32 |
| 1917 | 32 |
| 1918 | 19 |
| 1919 | 15 |
| 1920 | 38 |
| 1921 | 36 |
| 1922 | 23 |
| 1923 | 24 |
| 1924 | 18 |
| 1925 | 50 |
| 1926 | 35 |
| 1927 | 61 |
| 1928 | 42 |
| 1929 | 8 |
| 1930 | 23 |
| 1931 | 51 |
| 1933 | 53 |
| 1934 | 13 |
| 1935 | 16 |
| 1936 | 11 |
| 1937 | 29 |
| 1938 | 20 |
| 1939 | 6 |
| 1940 | 11 |
| 1941 | 5 |
| 1943 | 15 |
| 1944 | 7 |
| 1946 | 8 |
| 1947 | 22 |
| 1953 | 5 |