| Year | Count |
|---|---|
| 1910 | 170 |
| 1911 | 152 |
| 1912 | 234 |
| 1913 | 249 |
| 1914 | 270 |
| 1915 | 397 |
| 1916 | 386 |
| 1917 | 309 |
| 1918 | 419 |
| 1919 | 322 |
| 1920 | 362 |
| 1921 | 327 |
| 1922 | 258 |
| 1923 | 204 |
| 1924 | 258 |
| 1925 | 272 |
| 1926 | 158 |
| 1927 | 218 |
| 1928 | 175 |
| 1929 | 206 |
| 1930 | 168 |
| 1931 | 185 |
| 1932 | 143 |
| 1933 | 178 |
| 1934 | 79 |
| 1935 | 122 |
| 1936 | 62 |
| 1937 | 91 |
| 1938 | 97 |
| 1939 | 109 |
| 1940 | 67 |
| 1941 | 66 |
| 1942 | 72 |
| 1943 | 74 |
| 1944 | 50 |
| 1945 | 50 |
| 1946 | 20 |
| 1947 | 18 |
| 1948 | 38 |
| 1949 | 27 |
| 1950 | 33 |
| 1951 | 33 |
| 1952 | 26 |
| 1953 | 22 |
| 1954 | 20 |
| 1955 | 10 |
| 1956 | 16 |
| 1957 | 5 |
| 1958 | 10 |
| 1959 | 10 |
| 1961 | 14 |