| Year | Count |
|---|---|
| 1982 | 7 |
| 1983 | 6 |
| 1987 | 5 |
| 1988 | 6 |
| 1989 | 6 |
| 1993 | 10 |
| 1996 | 6 |
| 1997 | 5 |
| 1998 | 5 |
| 2000 | 16 |
| 2001 | 28 |
| 2002 | 39 |
| 2003 | 63 |
| 2004 | 69 |
| 2005 | 59 |
| 2006 | 57 |
| 2007 | 36 |
| 2008 | 89 |
| 2009 | 38 |
| 2010 | 108 |
| 2011 | 83 |
| 2012 | 54 |
| 2013 | 53 |
| 2014 | 54 |
| 2015 | 63 |
| 2016 | 59 |
| 2017 | 67 |
| 2018 | 38 |
| 2019 | 17 |
| 2020 | 40 |
| 2021 | 32 |
| 2022 | 57 |
| 2023 | 61 |
| 2024 | 51 |