| Year | Count |
|---|---|
| 1952 | 10 |
| 1955 | 18 |
| 1956 | 19 |
| 1967 | 15 |
| 1978 | 10 |
| 1997 | 10 |
| 1998 | 12 |
| 1999 | 36 |
| 2000 | 48 |
| 2001 | 54 |
| 2002 | 81 |
| 2003 | 191 |
| 2004 | 215 |
| 2005 | 266 |
| 2006 | 292 |
| 2007 | 344 |
| 2008 | 551 |
| 2009 | 598 |
| 2010 | 587 |
| 2011 | 721 |
| 2012 | 871 |
| 2013 | 1,053 |
| 2014 | 937 |
| 2015 | 1,144 |
| 2016 | 1,071 |
| 2017 | 1,215 |
| 2018 | 1,271 |
| 2019 | 1,263 |
| 2020 | 1,270 |
| 2021 | 1,506 |
| 2022 | 1,975 |
| 2023 | 2,036 |
| 2024 | 1,909 |