| Year | Count |
|---|---|
| 1993 | 6 |
| 1994 | 42 |
| 1995 | 75 |
| 1996 | 6 |
| 1996 | 128 |
| 1997 | 5 |
| 1997 | 183 |
| 1998 | 21 |
| 1998 | 169 |
| 1999 | 31 |
| 1999 | 217 |
| 2000 | 20 |
| 2000 | 368 |
| 2001 | 14 |
| 2001 | 335 |
| 2002 | 5 |
| 2002 | 302 |
| 2003 | 12 |
| 2003 | 285 |
| 2004 | 19 |
| 2004 | 359 |
| 2005 | 357 |
| 2006 | 10 |
| 2006 | 409 |
| 2007 | 12 |
| 2007 | 261 |
| 2008 | 288 |
| 2009 | 6 |
| 2009 | 191 |
| 2010 | 5 |
| 2010 | 176 |
| 2011 | 5 |
| 2011 | 112 |
| 2012 | 95 |
| 2013 | 46 |
| 2014 | 42 |
| 2015 | 57 |
| 2016 | 66 |
| 2017 | 65 |
| 2018 | 42 |
| 2019 | 34 |
| 2020 | 10 |
| 2021 | 28 |
| 2022 | 19 |
| 2023 | 25 |