| Year | Count |
|---|---|
| 1985 | 5 |
| 1987 | 6 |
| 1989 | 6 |
| 1991 | 7 |
| 1993 | 8 |
| 1994 | 10 |
| 1995 | 10 |
| 1996 | 26 |
| 1997 | 46 |
| 1998 | 72 |
| 1999 | 159 |
| 2000 | 229 |
| 2001 | 242 |
| 2002 | 265 |
| 2003 | 306 |
| 2004 | 328 |
| 2005 | 514 |
| 2006 | 468 |
| 2007 | 453 |
| 2008 | 501 |
| 2009 | 868 |
| 2010 | 964 |
| 2011 | 1,060 |
| 2012 | 1,109 |
| 2013 | 1,247 |
| 2014 | 1,146 |
| 2015 | 5 |
| 2015 | 1,365 |
| 2016 | 5 |
| 2016 | 1,498 |
| 2017 | 1,374 |
| 2018 | 1,419 |
| 2019 | 1,442 |
| 2020 | 1,213 |
| 2021 | 5 |
| 2021 | 1,712 |
| 2022 | 2,068 |
| 2023 | 10 |
| 2023 | 1,898 |
| 2024 | 6 |
| 2024 | 2,510 |