| Year | Count |
|---|---|
| 1920 | 5 |
| 1932 | 20 |
| 1986 | 10 |
| 1987 | 17 |
| 1994 | 10 |
| 1995 | 10 |
| 1997 | 5 |
| 1998 | 5 |
| 1999 | 5 |
| 2000 | 28 |
| 2001 | 57 |
| 2002 | 50 |
| 2003 | 64 |
| 2004 | 110 |
| 2005 | 149 |
| 2006 | 110 |
| 2007 | 123 |
| 2008 | 216 |
| 2009 | 195 |
| 2010 | 101 |
| 2011 | 178 |
| 2012 | 171 |
| 2013 | 160 |
| 2014 | 166 |
| 2015 | 258 |
| 2016 | 227 |
| 2017 | 147 |
| 2018 | 134 |
| 2019 | 176 |
| 2020 | 169 |
| 2021 | 264 |
| 2022 | 291 |
| 2023 | 365 |
| 2024 | 325 |