| Year | Count |
|---|---|
| 1999 | 12 |
| 2000 | 26 |
| 2001 | 35 |
| 2002 | 40 |
| 2003 | 59 |
| 2004 | 85 |
| 2005 | 121 |
| 2006 | 146 |
| 2007 | 202 |
| 2008 | 330 |
| 2009 | 486 |
| 2010 | 657 |
| 2011 | 1,132 |
| 2012 | 1,293 |
| 2013 | 1,368 |
| 2014 | 1,605 |
| 2015 | 1,738 |
| 2016 | 1,854 |
| 2017 | 1,787 |
| 2018 | 1,766 |
| 2019 | 1,934 |
| 2020 | 1,796 |
| 2021 | 1,950 |
| 2022 | 1,847 |
| 2023 | 1,535 |
| 2024 | 1,654 |