| Year | Count |
|---|---|
| 1910 | 10 |
| 1911 | 12 |
| 1912 | 14 |
| 1913 | 16 |
| 1914 | 34 |
| 1915 | 12 |
| 1916 | 26 |
| 1917 | 26 |
| 1918 | 21 |
| 1919 | 8 |
| 1920 | 23 |
| 1921 | 26 |
| 1922 | 24 |
| 1923 | 16 |
| 1924 | 11 |
| 1925 | 21 |
| 1926 | 19 |
| 1927 | 24 |
| 1928 | 36 |
| 1929 | 38 |
| 1930 | 30 |
| 1931 | 34 |
| 1932 | 46 |
| 1933 | 38 |
| 1934 | 13 |
| 1935 | 39 |
| 1936 | 17 |
| 1937 | 6 |
| 1938 | 15 |
| 1939 | 5 |
| 1940 | 10 |
| 1941 | 10 |
| 1943 | 51 |
| 1950 | 7 |
| 1951 | 7 |
| 1952 | 6 |
| 1953 | 8 |
| 1954 | 9 |
| 1955 | 7 |
| 1958 | 7 |
| 1961 | 15 |
| 1969 | 5 |
| 1971 | 5 |
| 1974 | 5 |
| 1976 | 6 |
| 1981 | 5 |
| 1982 | 7 |
| 1996 | 5 |