| Year | Count |
|---|---|
| 1910 | 5 |
| 1911 | 5 |
| 1912 | 13 |
| 1913 | 20 |
| 1914 | 20 |
| 1915 | 15 |
| 1916 | 43 |
| 1917 | 46 |
| 1918 | 44 |
| 1919 | 34 |
| 1920 | 47 |
| 1921 | 20 |
| 1922 | 28 |
| 1923 | 41 |
| 1924 | 31 |
| 1925 | 18 |
| 1926 | 28 |
| 1927 | 34 |
| 1928 | 25 |
| 1929 | 19 |
| 1930 | 14 |
| 1931 | 6 |
| 1932 | 12 |
| 1933 | 12 |
| 1934 | 11 |
| 1936 | 5 |
| 1937 | 6 |
| 1938 | 5 |
| 1939 | 8 |
| 1942 | 13 |
| 1943 | 6 |
| 1944 | 19 |
| 1946 | 6 |
| 1947 | 16 |
| 1948 | 19 |
| 1949 | 12 |
| 1953 | 7 |
| 1954 | 14 |
| 1955 | 10 |
| 1956 | 10 |
| 1957 | 10 |