| Year | Count |
|---|---|
| 1941 | 5 |
| 1947 | 5 |
| 1953 | 5 |
| 1978 | 5 |
| 1982 | 7 |
| 1983 | 5 |
| 1985 | 7 |
| 1988 | 5 |
| 1989 | 7 |
| 1990 | 8 |
| 1991 | 11 |
| 1992 | 6 |
| 1994 | 10 |
| 1995 | 5 |
| 1996 | 8 |
| 1998 | 10 |
| 1999 | 6 |
| 2000 | 9 |
| 2001 | 11 |
| 2002 | 6 |
| 2004 | 7 |
| 2005 | 8 |
| 2006 | 11 |
| 2007 | 11 |
| 2008 | 18 |
| 2009 | 22 |
| 2010 | 24 |
| 2011 | 39 |
| 2012 | 37 |
| 2013 | 47 |
| 2014 | 79 |
| 2015 | 69 |
| 2016 | 188 |
| 2017 | 240 |
| 2018 | 224 |
| 2019 | 242 |
| 2020 | 105 |
| 2021 | 106 |
| 2022 | 112 |
| 2023 | 124 |
| 2024 | 140 |