| Year | Count |
|---|---|
| 1911 | 6 |
| 1913 | 9 |
| 1914 | 21 |
| 1915 | 46 |
| 1916 | 29 |
| 1917 | 58 |
| 1918 | 47 |
| 1919 | 61 |
| 1920 | 36 |
| 1921 | 60 |
| 1922 | 53 |
| 1923 | 47 |
| 1924 | 63 |
| 1925 | 54 |
| 1926 | 47 |
| 1927 | 26 |
| 1928 | 33 |
| 1929 | 36 |
| 1930 | 56 |
| 1931 | 27 |
| 1932 | 38 |
| 1933 | 18 |
| 1935 | 15 |
| 1936 | 27 |
| 1937 | 5 |
| 1938 | 13 |
| 1939 | 14 |
| 1941 | 15 |
| 1942 | 32 |
| 1943 | 5 |
| 1944 | 6 |
| 1945 | 5 |
| 1946 | 5 |
| 1947 | 12 |
| 1948 | 12 |
| 1950 | 9 |
| 1951 | 10 |
| 1952 | 8 |
| 1953 | 18 |
| 1954 | 18 |
| 1955 | 32 |
| 1956 | 10 |
| 1957 | 8 |
| 1960 | 24 |
| 1962 | 5 |
| 1963 | 6 |
| 1964 | 16 |