| Year | Count |
|---|---|
| 1989 | 5 |
| 1993 | 5 |
| 1994 | 16 |
| 1995 | 28 |
| 1996 | 38 |
| 1997 | 41 |
| 1998 | 108 |
| 1999 | 76 |
| 2000 | 115 |
| 2001 | 170 |
| 2002 | 119 |
| 2003 | 183 |
| 2004 | 10 |
| 2004 | 224 |
| 2005 | 16 |
| 2005 | 250 |
| 2006 | 292 |
| 2007 | 5 |
| 2007 | 292 |
| 2008 | 369 |
| 2009 | 324 |
| 2010 | 382 |
| 2011 | 5 |
| 2011 | 355 |
| 2012 | 5 |
| 2012 | 445 |
| 2013 | 390 |
| 2014 | 13 |
| 2014 | 438 |
| 2015 | 496 |
| 2016 | 12 |
| 2016 | 639 |
| 2017 | 572 |
| 2018 | 10 |
| 2018 | 678 |
| 2019 | 617 |
| 2020 | 678 |
| 2021 | 5 |
| 2021 | 705 |
| 2022 | 10 |
| 2022 | 688 |
| 2023 | 24 |
| 2023 | 619 |
| 2024 | 5 |
| 2024 | 626 |