| Year | Count |
|---|---|
| 1910 | 29 |
| 1911 | 46 |
| 1912 | 59 |
| 1913 | 86 |
| 1914 | 85 |
| 1915 | 87 |
| 1916 | 94 |
| 1917 | 75 |
| 1918 | 118 |
| 1919 | 122 |
| 1920 | 115 |
| 1921 | 108 |
| 1922 | 137 |
| 1923 | 107 |
| 1924 | 115 |
| 1925 | 148 |
| 1926 | 135 |
| 1927 | 105 |
| 1928 | 151 |
| 1929 | 135 |
| 1930 | 110 |
| 1931 | 91 |
| 1932 | 98 |
| 1933 | 79 |
| 1934 | 75 |
| 1935 | 84 |
| 1936 | 113 |
| 1937 | 84 |
| 1938 | 59 |
| 1939 | 73 |
| 1940 | 77 |
| 1941 | 63 |
| 1942 | 63 |
| 1943 | 77 |
| 1944 | 61 |
| 1945 | 41 |
| 1946 | 51 |
| 1947 | 49 |
| 1948 | 41 |
| 1949 | 51 |
| 1950 | 85 |
| 1951 | 58 |
| 1952 | 79 |
| 1953 | 35 |
| 1954 | 33 |
| 1955 | 33 |
| 1956 | 48 |
| 1957 | 39 |
| 1958 | 26 |
| 1959 | 28 |
| 1960 | 17 |
| 1961 | 27 |
| 1962 | 10 |
| 1963 | 23 |
| 1964 | 5 |
| 1965 | 10 |
| 1969 | 10 |