| Year | Count |
|---|---|
| 1910 | 42 |
| 1911 | 96 |
| 1912 | 135 |
| 1913 | 169 |
| 1914 | 199 |
| 1915 | 293 |
| 1916 | 240 |
| 1917 | 257 |
| 1918 | 229 |
| 1919 | 149 |
| 1920 | 198 |
| 1921 | 182 |
| 1922 | 171 |
| 1923 | 150 |
| 1924 | 140 |
| 1925 | 107 |
| 1926 | 97 |
| 1927 | 169 |
| 1928 | 155 |
| 1929 | 117 |
| 1930 | 113 |
| 1931 | 116 |
| 1932 | 123 |
| 1933 | 108 |
| 1934 | 92 |
| 1935 | 118 |
| 1936 | 66 |
| 1937 | 43 |
| 1938 | 47 |
| 1939 | 53 |
| 1940 | 52 |
| 1941 | 33 |
| 1942 | 45 |
| 1943 | 81 |
| 1944 | 14 |
| 1945 | 14 |
| 1946 | 16 |
| 1948 | 16 |
| 1949 | 12 |
| 1950 | 12 |
| 1951 | 21 |
| 1952 | 6 |
| 1954 | 6 |
| 1955 | 9 |
| 1956 | 7 |
| 1957 | 7 |
| 1958 | 24 |
| 1960 | 5 |
| 1972 | 7 |