| Year | Count |
|---|---|
| 1910 | 5 |
| 1912 | 15 |
| 1913 | 14 |
| 1914 | 6 |
| 1915 | 24 |
| 1916 | 31 |
| 1917 | 29 |
| 1918 | 40 |
| 1919 | 27 |
| 1920 | 41 |
| 1921 | 33 |
| 1922 | 51 |
| 1923 | 24 |
| 1924 | 51 |
| 1925 | 50 |
| 1926 | 33 |
| 1927 | 41 |
| 1928 | 35 |
| 1929 | 83 |
| 1930 | 14 |
| 1931 | 24 |
| 1932 | 45 |
| 1933 | 33 |
| 1934 | 31 |
| 1935 | 34 |
| 1936 | 21 |
| 1937 | 31 |
| 1938 | 27 |
| 1939 | 24 |
| 1940 | 21 |
| 1941 | 8 |
| 1942 | 5 |
| 1945 | 9 |
| 1947 | 6 |
| 1949 | 6 |
| 1950 | 10 |
| 1952 | 7 |
| 1953 | 12 |
| 1954 | 5 |
| 1955 | 6 |
| 1957 | 8 |