| Year | Count |
|---|---|
| 1910 | 21 |
| 1911 | 13 |
| 1912 | 13 |
| 1913 | 21 |
| 1914 | 27 |
| 1915 | 18 |
| 1916 | 20 |
| 1917 | 35 |
| 1918 | 28 |
| 1919 | 58 |
| 1920 | 29 |
| 1921 | 26 |
| 1922 | 22 |
| 1923 | 21 |
| 1924 | 36 |
| 1925 | 35 |
| 1926 | 44 |
| 1927 | 79 |
| 1928 | 55 |
| 1929 | 42 |
| 1930 | 25 |
| 1931 | 14 |
| 1932 | 78 |
| 1933 | 27 |
| 1934 | 39 |
| 1935 | 47 |
| 1937 | 11 |
| 1939 | 11 |
| 1940 | 8 |
| 1942 | 17 |
| 1943 | 17 |
| 1944 | 5 |
| 1945 | 10 |
| 1946 | 6 |
| 1948 | 9 |
| 1949 | 5 |
| 1950 | 5 |
| 1951 | 5 |