| Year | Count |
|---|---|
| 1915 | 29 |
| 1916 | 26 |
| 1917 | 38 |
| 1918 | 21 |
| 1919 | 57 |
| 1920 | 42 |
| 1921 | 68 |
| 1922 | 43 |
| 1923 | 16 |
| 1924 | 55 |
| 1925 | 28 |
| 1926 | 45 |
| 1927 | 27 |
| 1928 | 20 |
| 1929 | 48 |
| 1930 | 7 |
| 1932 | 11 |
| 1933 | 7 |
| 1934 | 5 |
| 1936 | 18 |
| 1937 | 5 |
| 1938 | 12 |
| 1940 | 5 |
| 1941 | 21 |
| 1942 | 5 |
| 1975 | 7 |
| 1976 | 7 |
| 1977 | 11 |
| 1979 | 5 |
| 1980 | 6 |
| 1983 | 5 |
| 1984 | 10 |
| 1987 | 6 |
| 1991 | 11 |
| 1999 | 6 |
| 2002 | 5 |