| Year | Count |
|---|---|
| 1910 | 5 |
| 1912 | 9 |
| 1913 | 31 |
| 1914 | 35 |
| 1915 | 45 |
| 1916 | 72 |
| 1917 | 31 |
| 1918 | 35 |
| 1919 | 49 |
| 1920 | 40 |
| 1921 | 62 |
| 1922 | 29 |
| 1923 | 56 |
| 1924 | 23 |
| 1925 | 44 |
| 1926 | 27 |
| 1927 | 38 |
| 1928 | 53 |
| 1929 | 45 |
| 1930 | 27 |
| 1931 | 34 |
| 1932 | 45 |
| 1933 | 18 |
| 1934 | 21 |
| 1935 | 18 |
| 1936 | 22 |
| 1937 | 40 |
| 1938 | 19 |
| 1939 | 30 |
| 1940 | 32 |
| 1941 | 56 |
| 1942 | 82 |
| 1943 | 54 |
| 1944 | 33 |
| 1945 | 40 |
| 1946 | 38 |
| 1947 | 21 |
| 1948 | 29 |
| 1949 | 24 |
| 1950 | 26 |
| 1951 | 6 |
| 1953 | 25 |
| 1954 | 24 |
| 1955 | 18 |
| 1957 | 27 |
| 1958 | 21 |
| 1970 | 7 |