| Year | Count |
|---|---|
| 1912 | 13 |
| 1913 | 19 |
| 1914 | 75 |
| 1915 | 75 |
| 1916 | 81 |
| 1917 | 73 |
| 1918 | 70 |
| 1919 | 53 |
| 1920 | 106 |
| 1921 | 128 |
| 1922 | 107 |
| 1923 | 116 |
| 1924 | 113 |
| 1925 | 72 |
| 1926 | 96 |
| 1927 | 52 |
| 1928 | 70 |
| 1929 | 75 |
| 1930 | 54 |
| 1931 | 67 |
| 1932 | 78 |
| 1933 | 14 |
| 1934 | 48 |
| 1935 | 36 |
| 1936 | 34 |
| 1937 | 7 |
| 1938 | 19 |
| 1939 | 16 |
| 1940 | 7 |
| 1941 | 15 |
| 1942 | 5 |
| 1943 | 18 |
| 1944 | 10 |
| 1945 | 17 |
| 1946 | 5 |
| 1947 | 6 |
| 1948 | 23 |
| 1949 | 10 |
| 1950 | 22 |
| 1952 | 9 |
| 1953 | 7 |
| 1954 | 20 |
| 1955 | 24 |
| 1956 | 5 |
| 1960 | 7 |
| 1967 | 5 |
| 1987 | 6 |
| 1991 | 5 |