| Year | Count |
|---|---|
| 1912 | 6 |
| 1914 | 12 |
| 1915 | 15 |
| 1916 | 19 |
| 1917 | 17 |
| 1918 | 18 |
| 1919 | 19 |
| 1920 | 27 |
| 1921 | 25 |
| 1922 | 56 |
| 1923 | 61 |
| 1924 | 62 |
| 1925 | 33 |
| 1926 | 39 |
| 1927 | 52 |
| 1928 | 41 |
| 1929 | 24 |
| 1930 | 22 |
| 1931 | 19 |
| 1932 | 33 |
| 1933 | 17 |
| 1934 | 8 |
| 1935 | 24 |
| 1936 | 5 |
| 1937 | 9 |
| 1938 | 5 |
| 1942 | 10 |
| 1943 | 6 |
| 1944 | 7 |
| 1945 | 9 |
| 1947 | 9 |
| 1948 | 5 |
| 1951 | 7 |
| 1952 | 5 |