| Year | Count |
|---|---|
| 1985 | 15 |
| 1986 | 38 |
| 1987 | 48 |
| 1988 | 83 |
| 1989 | 145 |
| 1990 | 267 |
| 1991 | 368 |
| 1992 | 492 |
| 1993 | 560 |
| 1994 | 664 |
| 1995 | 676 |
| 1996 | 751 |
| 1997 | 985 |
| 1998 | 1,190 |
| 1999 | 956 |
| 2000 | 851 |
| 2001 | 909 |
| 2002 | 889 |
| 2003 | 961 |
| 2004 | 906 |
| 2005 | 795 |
| 2006 | 820 |
| 2007 | 803 |
| 2008 | 632 |
| 2009 | 387 |
| 2010 | 401 |
| 2011 | 394 |
| 2012 | 345 |
| 2013 | 321 |
| 2014 | 369 |
| 2015 | 296 |
| 2016 | 242 |
| 2017 | 214 |
| 2018 | 103 |
| 2019 | 105 |
| 2020 | 100 |
| 2021 | 119 |
| 2022 | 70 |
| 2023 | 55 |
| 2024 | 79 |