| Year | Count |
|---|---|
| 1910 | 12 |
| 1911 | 63 |
| 1912 | 26 |
| 1913 | 34 |
| 1914 | 69 |
| 1915 | 91 |
| 1916 | 48 |
| 1917 | 80 |
| 1918 | 125 |
| 1919 | 68 |
| 1920 | 71 |
| 1921 | 78 |
| 1922 | 54 |
| 1923 | 60 |
| 1924 | 46 |
| 1925 | 71 |
| 1926 | 14 |
| 1927 | 95 |
| 1928 | 59 |
| 1929 | 58 |
| 1930 | 69 |
| 1931 | 65 |
| 1932 | 72 |
| 1933 | 50 |
| 1934 | 43 |
| 1935 | 52 |
| 1936 | 54 |
| 1937 | 44 |
| 1938 | 42 |
| 1939 | 53 |
| 1940 | 30 |
| 1941 | 11 |
| 1942 | 16 |
| 1943 | 29 |
| 1944 | 12 |
| 1946 | 6 |
| 1947 | 23 |
| 1948 | 16 |
| 1950 | 22 |
| 1951 | 15 |
| 1952 | 8 |
| 1960 | 6 |