| Year | Count |
|---|---|
| 1910 | 8 |
| 1911 | 5 |
| 1912 | 10 |
| 1913 | 13 |
| 1914 | 29 |
| 1915 | 10 |
| 1916 | 33 |
| 1917 | 45 |
| 1918 | 52 |
| 1919 | 12 |
| 1920 | 33 |
| 1921 | 26 |
| 1922 | 31 |
| 1923 | 35 |
| 1924 | 57 |
| 1925 | 51 |
| 1926 | 60 |
| 1927 | 66 |
| 1928 | 37 |
| 1929 | 33 |
| 1930 | 35 |
| 1931 | 29 |
| 1932 | 12 |
| 1933 | 8 |
| 1934 | 15 |
| 1935 | 14 |
| 1936 | 8 |
| 1937 | 17 |
| 1938 | 10 |
| 1939 | 5 |
| 1940 | 13 |
| 1941 | 7 |
| 1942 | 8 |
| 1943 | 6 |
| 1946 | 5 |
| 1948 | 8 |
| 1949 | 12 |
| 1951 | 18 |
| 1955 | 14 |
| 1956 | 16 |
| 1957 | 17 |
| 1959 | 6 |
| 1960 | 5 |
| 1964 | 7 |
| 1969 | 5 |
| 1983 | 5 |