| Year | Count |
|---|---|
| 1912 | 9 |
| 1913 | 6 |
| 1914 | 8 |
| 1915 | 13 |
| 1916 | 10 |
| 1917 | 11 |
| 1918 | 19 |
| 1919 | 10 |
| 1920 | 6 |
| 1921 | 9 |
| 1922 | 9 |
| 1923 | 8 |
| 1925 | 7 |
| 1926 | 11 |
| 1927 | 15 |
| 1928 | 13 |
| 1929 | 11 |
| 1930 | 10 |
| 1931 | 9 |
| 1932 | 5 |
| 1933 | 6 |
| 1934 | 7 |
| 1935 | 6 |
| 1936 | 5 |
| 1939 | 5 |
| 1940 | 6 |
| 1941 | 13 |
| 1942 | 5 |
| 1943 | 6 |
| 1944 | 6 |
| 1946 | 7 |
| 1947 | 7 |
| 1949 | 10 |
| 1951 | 6 |
| 1953 | 5 |
| 1955 | 5 |
| 1956 | 5 |
| 1957 | 5 |
| 1962 | 7 |
| 1967 | 5 |
| 1977 | 6 |
| 1982 | 5 |
| 1985 | 7 |
| 1986 | 5 |
| 1992 | 5 |
| 1992 | 15 |
| 1999 | 5 |
| 2000 | 7 |
| 2004 | 10 |
| 2005 | 10 |
| 2006 | 5 |
| 2010 | 9 |
| 2012 | 5 |
| 2014 | 5 |
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 6 |
| 2019 | 5 |
| 2019 | 6 |