| Year | Count |
|---|---|
| 1910 | 7 |
| 1913 | 5 |
| 1914 | 10 |
| 1915 | 19 |
| 1916 | 46 |
| 1917 | 34 |
| 1918 | 50 |
| 1919 | 39 |
| 1920 | 25 |
| 1921 | 21 |
| 1922 | 28 |
| 1923 | 29 |
| 1924 | 38 |
| 1925 | 90 |
| 1926 | 59 |
| 1927 | 65 |
| 1928 | 27 |
| 1929 | 64 |
| 1930 | 66 |
| 1931 | 41 |
| 1932 | 68 |
| 1933 | 34 |
| 1934 | 36 |
| 1935 | 27 |
| 1936 | 12 |
| 1937 | 43 |
| 1938 | 32 |
| 1939 | 32 |
| 1940 | 39 |
| 1941 | 10 |
| 1942 | 20 |
| 1943 | 28 |
| 1944 | 27 |
| 1946 | 42 |
| 1947 | 17 |
| 1948 | 22 |
| 1949 | 5 |
| 1951 | 5 |
| 1952 | 6 |
| 1953 | 5 |
| 1957 | 28 |
| 1958 | 21 |
| 1960 | 5 |