| Year | Count |
|---|---|
| 1914 | 22 |
| 1915 | 37 |
| 1916 | 39 |
| 1917 | 58 |
| 1918 | 73 |
| 1919 | 63 |
| 1920 | 72 |
| 1921 | 73 |
| 1922 | 111 |
| 1923 | 67 |
| 1924 | 69 |
| 1925 | 103 |
| 1926 | 90 |
| 1927 | 111 |
| 1928 | 129 |
| 1929 | 111 |
| 1930 | 101 |
| 1931 | 73 |
| 1932 | 85 |
| 1933 | 71 |
| 1934 | 54 |
| 1935 | 91 |
| 1936 | 34 |
| 1937 | 40 |
| 1938 | 64 |
| 1939 | 87 |
| 1940 | 38 |
| 1941 | 52 |
| 1942 | 72 |
| 1943 | 98 |
| 1944 | 89 |
| 1945 | 69 |
| 1946 | 68 |
| 1947 | 57 |
| 1948 | 74 |
| 1949 | 48 |
| 1950 | 73 |
| 1951 | 33 |
| 1952 | 19 |
| 1953 | 22 |
| 1954 | 36 |
| 1955 | 15 |
| 1956 | 25 |
| 1957 | 29 |
| 1959 | 6 |
| 1960 | 12 |
| 1961 | 5 |
| 1964 | 5 |
| 1965 | 5 |