| Year | Count |
|---|---|
| 1921 | 15 |
| 1925 | 5 |
| 1927 | 5 |
| 1937 | 5 |
| 1963 | 5 |
| 1972 | 5 |
| 1982 | 7 |
| 1986 | 15 |
| 1989 | 16 |
| 1991 | 5 |
| 1992 | 5 |
| 1993 | 6 |
| 1995 | 5 |
| 1996 | 12 |
| 1997 | 6 |
| 1998 | 6 |
| 2000 | 8 |
| 2003 | 5 |
| 2004 | 14 |
| 2005 | 24 |
| 2007 | 16 |
| 2008 | 10 |
| 2009 | 5 |
| 2012 | 5 |
| 2013 | 10 |
| 2014 | 8 |
| 2015 | 37 |
| 2016 | 45 |
| 2017 | 29 |
| 2018 | 22 |
| 2019 | 16 |
| 2020 | 19 |
| 2021 | 17 |
| 2022 | 6 |
| 2023 | 44 |
| 2024 | 16 |