| Year | Count |
|---|---|
| 1982 | 355 |
| 1983 | 337 |
| 1984 | 244 |
| 1985 | 277 |
| 1986 | 194 |
| 1987 | 220 |
| 1988 | 152 |
| 1989 | 130 |
| 1990 | 124 |
| 1991 | 149 |
| 1992 | 238 |
| 1993 | 228 |
| 1994 | 224 |
| 1995 | 214 |
| 1996 | 199 |
| 1997 | 179 |
| 1998 | 189 |
| 1999 | 140 |
| 2000 | 172 |
| 2001 | 160 |
| 2002 | 140 |
| 2003 | 99 |
| 2004 | 57 |
| 2005 | 171 |
| 2006 | 184 |
| 2007 | 438 |
| 2008 | 595 |
| 2009 | 984 |
| 2010 | 1,138 |
| 2011 | 1,101 |
| 2012 | 1,291 |
| 2013 | 1,214 |
| 2014 | 1,136 |
| 2015 | 1,377 |
| 2016 | 1,426 |
| 2017 | 1,706 |
| 2018 | 2,126 |
| 2019 | 2,379 |
| 2020 | 1,853 |
| 2021 | 2,115 |
| 2022 | 1,744 |
| 2023 | 1,451 |
| 2024 | 1,351 |