| Year | Count |
|---|---|
| 1915 | 5 |
| 1916 | 8 |
| 1917 | 11 |
| 1918 | 8 |
| 1919 | 10 |
| 1920 | 7 |
| 1921 | 8 |
| 1922 | 10 |
| 1924 | 18 |
| 1925 | 20 |
| 1926 | 16 |
| 1927 | 10 |
| 1929 | 12 |
| 1932 | 5 |
| 1933 | 6 |
| 1934 | 7 |
| 1936 | 5 |
| 1937 | 6 |
| 1938 | 7 |
| 1939 | 8 |
| 1943 | 5 |
| 1944 | 5 |
| 1947 | 7 |
| 1951 | 5 |
| 1952 | 6 |
| 1953 | 7 |
| 1955 | 7 |
| 1957 | 12 |
| 1958 | 10 |
| 1960 | 16 |
| 1961 | 5 |
| 1965 | 8 |
| 1967 | 5 |
| 1971 | 5 |
| 1974 | 5 |
| 1975 | 7 |
| 1986 | 5 |
| 1989 | 5 |
| 1994 | 5 |
| 1997 | 6 |
| 1999 | 5 |
| 2000 | 5 |
| 2002 | 5 |
| 2008 | 5 |
| 2010 | 5 |
| 2012 | 5 |
| 2013 | 6 |
| 2017 | 15 |
| 2019 | 12 |
| 2021 | 10 |
| 2023 | 10 |