| Year | Count |
|---|---|
| 1984 | 5 |
| 1986 | 18 |
| 1987 | 12 |
| 1988 | 8 |
| 1991 | 19 |
| 1992 | 54 |
| 1993 | 53 |
| 1994 | 37 |
| 1995 | 60 |
| 1996 | 97 |
| 1997 | 100 |
| 1998 | 161 |
| 1999 | 165 |
| 2000 | 155 |
| 2001 | 1,157 |
| 2002 | 823 |
| 2003 | 387 |
| 2004 | 813 |
| 2005 | 925 |
| 2006 | 746 |
| 2007 | 830 |
| 2008 | 874 |
| 2009 | 578 |
| 2010 | 598 |
| 2011 | 809 |
| 2012 | 869 |
| 2013 | 665 |
| 2014 | 614 |
| 2015 | 623 |
| 2016 | 675 |
| 2017 | 630 |
| 2018 | 702 |
| 2019 | 686 |
| 2020 | 663 |
| 2021 | 764 |
| 2022 | 1,008 |
| 2023 | 934 |
| 2024 | 923 |