| Year | Count |
|---|---|
| 1910 | 924 |
| 1911 | 845 |
| 1912 | 789 |
| 1913 | 848 |
| 1914 | 878 |
| 1915 | 996 |
| 1916 | 951 |
| 1917 | 923 |
| 1918 | 922 |
| 1919 | 842 |
| 1920 | 866 |
| 1921 | 684 |
| 1922 | 591 |
| 1923 | 487 |
| 1924 | 504 |
| 1925 | 694 |
| 1926 | 566 |
| 1927 | 575 |
| 1928 | 415 |
| 1929 | 446 |
| 1930 | 370 |
| 1931 | 297 |
| 1932 | 265 |
| 1933 | 214 |
| 1934 | 238 |
| 1935 | 253 |
| 1936 | 192 |
| 1937 | 205 |
| 1938 | 109 |
| 1939 | 147 |
| 1940 | 142 |
| 1941 | 93 |
| 1942 | 81 |
| 1943 | 86 |
| 1944 | 64 |
| 1945 | 50 |
| 1946 | 56 |
| 1947 | 65 |
| 1948 | 59 |
| 1949 | 76 |
| 1950 | 53 |
| 1951 | 12 |
| 1952 | 35 |
| 1953 | 41 |
| 1954 | 23 |
| 1955 | 6 |
| 1956 | 35 |
| 1957 | 30 |
| 1959 | 16 |
| 1960 | 12 |
| 1961 | 7 |
| 1963 | 12 |
| 1964 | 10 |
| 1967 | 5 |
| 1970 | 10 |
| 1982 | 10 |