| Year | Count |
|---|---|
| 1910 | 80 |
| 1911 | 87 |
| 1912 | 121 |
| 1913 | 151 |
| 1914 | 171 |
| 1915 | 204 |
| 1916 | 279 |
| 1917 | 205 |
| 1918 | 247 |
| 1919 | 206 |
| 1920 | 174 |
| 1921 | 184 |
| 1922 | 181 |
| 1923 | 161 |
| 1924 | 165 |
| 1925 | 111 |
| 1926 | 104 |
| 1927 | 91 |
| 1928 | 114 |
| 1929 | 71 |
| 1930 | 71 |
| 1931 | 72 |
| 1932 | 35 |
| 1933 | 28 |
| 1934 | 42 |
| 1935 | 55 |
| 1936 | 20 |
| 1937 | 21 |
| 1938 | 11 |
| 1940 | 7 |
| 1941 | 12 |
| 1943 | 11 |
| 1945 | 7 |
| 1946 | 24 |
| 1947 | 7 |
| 1948 | 8 |
| 1949 | 5 |
| 1952 | 7 |
| 1956 | 5 |