| Year | Count |
|---|---|
| 1910 | 74 |
| 1911 | 75 |
| 1912 | 158 |
| 1913 | 144 |
| 1914 | 203 |
| 1915 | 238 |
| 1916 | 224 |
| 1917 | 190 |
| 1918 | 212 |
| 1919 | 185 |
| 1920 | 139 |
| 1921 | 140 |
| 1922 | 150 |
| 1923 | 142 |
| 1924 | 99 |
| 1925 | 80 |
| 1926 | 76 |
| 1927 | 81 |
| 1928 | 54 |
| 1929 | 42 |
| 1930 | 34 |
| 1931 | 43 |
| 1932 | 25 |
| 1933 | 11 |
| 1934 | 18 |
| 1935 | 13 |
| 1936 | 10 |
| 1937 | 10 |
| 1938 | 6 |
| 1939 | 8 |
| 1940 | 10 |
| 1941 | 10 |
| 1942 | 14 |
| 1943 | 7 |
| 1945 | 7 |
| 1946 | 11 |
| 1947 | 9 |
| 1948 | 7 |
| 1949 | 11 |
| 1950 | 12 |
| 1951 | 18 |
| 1952 | 13 |
| 1953 | 6 |
| 1954 | 7 |
| 1955 | 11 |
| 1957 | 7 |
| 1958 | 6 |
| 1960 | 5 |
| 1961 | 5 |
| 1966 | 7 |