| Year | Count |
|---|---|
| 1910 | 23 |
| 1911 | 29 |
| 1912 | 44 |
| 1913 | 69 |
| 1914 | 76 |
| 1915 | 126 |
| 1916 | 113 |
| 1917 | 133 |
| 1918 | 140 |
| 1919 | 123 |
| 1920 | 139 |
| 1921 | 159 |
| 1922 | 146 |
| 1923 | 113 |
| 1924 | 130 |
| 1925 | 174 |
| 1926 | 160 |
| 1927 | 184 |
| 1928 | 190 |
| 1929 | 151 |
| 1930 | 109 |
| 1931 | 160 |
| 1932 | 152 |
| 1933 | 197 |
| 1934 | 131 |
| 1935 | 140 |
| 1936 | 104 |
| 1937 | 112 |
| 1938 | 70 |
| 1939 | 115 |
| 1940 | 100 |
| 1941 | 55 |
| 1942 | 42 |
| 1943 | 38 |
| 1944 | 27 |
| 1945 | 21 |
| 1946 | 21 |
| 1947 | 35 |
| 1948 | 47 |
| 1949 | 30 |
| 1950 | 25 |
| 1951 | 25 |
| 1952 | 25 |
| 1953 | 45 |
| 1954 | 24 |
| 1955 | 18 |
| 1956 | 38 |
| 1957 | 33 |
| 1958 | 11 |
| 1959 | 17 |
| 1960 | 5 |
| 1961 | 10 |
| 1962 | 15 |
| 1964 | 10 |
| 1966 | 5 |