| Year | Count |
|---|---|
| 1914 | 5 |
| 1915 | 5 |
| 1920 | 11 |
| 1921 | 8 |
| 1922 | 10 |
| 1923 | 12 |
| 1925 | 16 |
| 1927 | 6 |
| 1930 | 7 |
| 1947 | 5 |
| 1952 | 5 |
| 1957 | 5 |
| 1969 | 5 |
| 1970 | 5 |
| 1971 | 9 |
| 1972 | 6 |
| 1973 | 6 |
| 1977 | 10 |
| 1983 | 9 |
| 1984 | 5 |
| 1987 | 6 |
| 1988 | 5 |
| 1998 | 18 |
| 1999 | 16 |
| 2000 | 31 |
| 2001 | 54 |
| 2002 | 20 |
| 2003 | 18 |
| 2004 | 5 |
| 2005 | 5 |
| 2006 | 12 |
| 2007 | 9 |
| 2008 | 22 |
| 2009 | 10 |
| 2010 | 24 |
| 2012 | 6 |
| 2015 | 27 |
| 2016 | 10 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 6 |
| 2021 | 5 |
| 2022 | 16 |
| 2023 | 7 |
| 2024 | 15 |