| Year | Count |
|---|---|
| 1913 | 12 |
| 1914 | 16 |
| 1915 | 17 |
| 1916 | 5 |
| 1917 | 15 |
| 1918 | 46 |
| 1919 | 38 |
| 1920 | 42 |
| 1921 | 53 |
| 1922 | 52 |
| 1923 | 22 |
| 1924 | 63 |
| 1925 | 98 |
| 1926 | 73 |
| 1927 | 80 |
| 1928 | 73 |
| 1929 | 119 |
| 1930 | 118 |
| 1931 | 99 |
| 1932 | 87 |
| 1933 | 92 |
| 1934 | 76 |
| 1935 | 95 |
| 1936 | 60 |
| 1937 | 104 |
| 1938 | 69 |
| 1939 | 78 |
| 1940 | 65 |
| 1941 | 41 |
| 1942 | 37 |
| 1943 | 44 |
| 1944 | 30 |
| 1945 | 33 |
| 1946 | 27 |
| 1947 | 32 |
| 1948 | 25 |
| 1949 | 15 |
| 1950 | 20 |
| 1951 | 23 |
| 1952 | 10 |
| 1953 | 32 |
| 1954 | 26 |
| 1955 | 38 |
| 1956 | 20 |
| 1957 | 18 |
| 1958 | 18 |
| 1959 | 14 |
| 1960 | 18 |
| 1961 | 10 |
| 1963 | 10 |
| 1964 | 10 |
| 1965 | 14 |