| Year | Count |
|---|---|
| 1917 | 5 |
| 1920 | 5 |
| 1921 | 5 |
| 1950 | 5 |
| 1951 | 5 |
| 1953 | 8 |
| 1956 | 7 |
| 1974 | 5 |
| 1987 | 12 |
| 1995 | 17 |
| 1997 | 7 |
| 1998 | 35 |
| 1999 | 10 |
| 2001 | 31 |
| 2002 | 18 |
| 2003 | 5 |
| 2004 | 42 |
| 2005 | 76 |
| 2006 | 59 |
| 2007 | 72 |
| 2008 | 115 |
| 2009 | 51 |
| 2010 | 46 |
| 2011 | 117 |
| 2012 | 247 |
| 2013 | 365 |
| 2014 | 487 |
| 2015 | 558 |
| 2016 | 565 |
| 2017 | 560 |
| 2018 | 560 |
| 2019 | 560 |
| 2020 | 648 |
| 2021 | 774 |
| 2022 | 858 |
| 2023 | 906 |
| 2024 | 883 |