| Year | Count |
|---|---|
| 1993 | 5 |
| 1996 | 10 |
| 1997 | 12 |
| 1998 | 30 |
| 1999 | 81 |
| 2000 | 172 |
| 2001 | 292 |
| 2002 | 439 |
| 2003 | 12 |
| 2003 | 842 |
| 2004 | 53 |
| 2004 | 1,344 |
| 2005 | 42 |
| 2005 | 1,628 |
| 2006 | 92 |
| 2006 | 1,731 |
| 2007 | 47 |
| 2007 | 2,092 |
| 2008 | 47 |
| 2008 | 2,561 |
| 2009 | 99 |
| 2009 | 2,897 |
| 2010 | 41 |
| 2010 | 2,867 |
| 2011 | 51 |
| 2011 | 2,913 |
| 2012 | 71 |
| 2012 | 3,473 |
| 2013 | 11 |
| 2013 | 3,937 |
| 2014 | 55 |
| 2014 | 4,109 |
| 2015 | 58 |
| 2015 | 4,282 |
| 2016 | 4,214 |
| 2017 | 6 |
| 2017 | 3,939 |
| 2018 | 3,959 |
| 2019 | 9 |
| 2019 | 3,631 |
| 2020 | 3,201 |
| 2021 | 2,954 |
| 2022 | 2,743 |
| 2023 | 2,504 |
| 2024 | 5 |
| 2024 | 1,961 |