| Year | Count |
|---|---|
| 1912 | 6 |
| 1913 | 12 |
| 1916 | 5 |
| 1917 | 10 |
| 1918 | 5 |
| 1919 | 31 |
| 1920 | 11 |
| 1921 | 17 |
| 1922 | 10 |
| 1923 | 45 |
| 1924 | 28 |
| 1925 | 14 |
| 1926 | 59 |
| 1927 | 50 |
| 1928 | 22 |
| 1929 | 69 |
| 1930 | 58 |
| 1931 | 36 |
| 1932 | 11 |
| 1933 | 47 |
| 1934 | 12 |
| 1935 | 24 |
| 1936 | 28 |
| 1937 | 17 |
| 1939 | 5 |
| 1940 | 5 |
| 1941 | 6 |
| 1942 | 5 |
| 1943 | 6 |
| 1944 | 6 |
| 1946 | 5 |
| 1947 | 5 |
| 1949 | 10 |
| 1955 | 15 |
| 1957 | 10 |
| 1958 | 6 |
| 1962 | 5 |
| 1970 | 6 |
| 1978 | 6 |
| 1989 | 5 |
| 1990 | 10 |
| 1992 | 24 |
| 1993 | 6 |
| 1998 | 5 |
| 1999 | 7 |
| 2000 | 5 |
| 2001 | 5 |
| 2008 | 5 |
| 2010 | 6 |
| 2013 | 5 |