| Year | Count |
|---|---|
| 1910 | 82 |
| 1911 | 135 |
| 1912 | 171 |
| 1913 | 172 |
| 1914 | 213 |
| 1915 | 239 |
| 1916 | 301 |
| 1917 | 310 |
| 1918 | 315 |
| 1919 | 291 |
| 1920 | 258 |
| 1921 | 258 |
| 1922 | 230 |
| 1923 | 150 |
| 1924 | 196 |
| 1925 | 224 |
| 1926 | 253 |
| 1927 | 209 |
| 1928 | 182 |
| 1929 | 260 |
| 1930 | 149 |
| 1931 | 137 |
| 1932 | 117 |
| 1933 | 131 |
| 1934 | 196 |
| 1935 | 74 |
| 1936 | 117 |
| 1937 | 143 |
| 1938 | 105 |
| 1939 | 106 |
| 1940 | 39 |
| 1941 | 76 |
| 1942 | 42 |
| 1943 | 110 |
| 1944 | 57 |
| 1945 | 39 |
| 1946 | 46 |
| 1947 | 52 |
| 1948 | 40 |
| 1949 | 34 |
| 1950 | 37 |
| 1951 | 28 |
| 1952 | 36 |
| 1953 | 37 |
| 1954 | 10 |
| 1955 | 20 |
| 1956 | 23 |
| 1959 | 10 |
| 1962 | 6 |