| Year | Count |
|---|---|
| 1915 | 7 |
| 1943 | 5 |
| 1954 | 9 |
| 1955 | 5 |
| 1957 | 5 |
| 1958 | 7 |
| 1959 | 6 |
| 1961 | 5 |
| 1962 | 7 |
| 1963 | 6 |
| 1964 | 6 |
| 1965 | 7 |
| 1966 | 7 |
| 1968 | 7 |
| 1969 | 15 |
| 1970 | 12 |
| 1971 | 7 |
| 1972 | 10 |
| 1973 | 14 |
| 1975 | 6 |
| 1978 | 6 |
| 1983 | 5 |
| 1986 | 6 |
| 1987 | 5 |
| 1989 | 11 |
| 1990 | 16 |
| 1991 | 10 |
| 1992 | 5 |
| 1993 | 10 |
| 1994 | 10 |
| 1998 | 10 |
| 2000 | 21 |
| 2001 | 18 |
| 2002 | 5 |
| 2003 | 10 |
| 2004 | 17 |
| 2006 | 12 |
| 2010 | 10 |
| 2015 | 12 |
| 2016 | 16 |
| 2017 | 20 |
| 2018 | 10 |
| 2020 | 10 |
| 2022 | 10 |
| 2024 | 17 |