| Year | Count |
|---|---|
| 1946 | 7 |
| 1951 | 5 |
| 1956 | 5 |
| 1958 | 5 |
| 1963 | 5 |
| 1971 | 5 |
| 1977 | 5 |
| 1993 | 5 |
| 1995 | 11 |
| 1996 | 10 |
| 1997 | 11 |
| 1998 | 15 |
| 2000 | 12 |
| 2001 | 17 |
| 2002 | 10 |
| 2003 | 30 |
| 2004 | 96 |
| 2005 | 59 |
| 2006 | 99 |
| 2007 | 6 |
| 2007 | 130 |
| 2008 | 111 |
| 2009 | 75 |
| 2010 | 59 |
| 2011 | 49 |
| 2012 | 80 |
| 2013 | 81 |
| 2014 | 173 |
| 2015 | 191 |
| 2016 | 185 |
| 2017 | 309 |
| 2018 | 256 |
| 2019 | 152 |
| 2020 | 180 |
| 2021 | 226 |
| 2022 | 158 |
| 2023 | 163 |
| 2024 | 112 |