| Year | Count |
|---|---|
| 1986 | 15 |
| 1987 | 10 |
| 1990 | 5 |
| 1991 | 15 |
| 1992 | 12 |
| 1993 | 6 |
| 1994 | 10 |
| 1995 | 12 |
| 2001 | 22 |
| 2003 | 12 |
| 2004 | 12 |
| 2005 | 10 |
| 2006 | 55 |
| 2007 | 49 |
| 2008 | 42 |
| 2009 | 45 |
| 2010 | 83 |
| 2011 | 40 |
| 2012 | 50 |
| 2013 | 50 |
| 2014 | 73 |
| 2015 | 83 |
| 2016 | 128 |
| 2017 | 199 |
| 2018 | 70 |
| 2019 | 64 |
| 2020 | 80 |
| 2021 | 115 |
| 2022 | 87 |
| 2023 | 67 |
| 2024 | 117 |