| Year | Count |
|---|---|
| 1954 | 5 |
| 1957 | 5 |
| 1969 | 6 |
| 1997 | 12 |
| 1998 | 86 |
| 1999 | 131 |
| 2000 | 108 |
| 2001 | 156 |
| 2002 | 116 |
| 2003 | 142 |
| 2004 | 261 |
| 2005 | 209 |
| 2006 | 199 |
| 2007 | 182 |
| 2008 | 178 |
| 2009 | 153 |
| 2010 | 170 |
| 2011 | 241 |
| 2012 | 118 |
| 2013 | 254 |
| 2014 | 178 |
| 2015 | 239 |
| 2016 | 174 |
| 2017 | 174 |
| 2018 | 126 |
| 2019 | 96 |
| 2020 | 98 |
| 2021 | 112 |
| 2022 | 84 |
| 2023 | 42 |
| 2024 | 41 |