| Year | Count |
|---|---|
| 1979 | 6 |
| 1981 | 44 |
| 1982 | 31 |
| 1983 | 8 |
| 1984 | 5 |
| 1986 | 6 |
| 1987 | 14 |
| 1988 | 15 |
| 1989 | 17 |
| 1991 | 10 |
| 1994 | 5 |
| 1996 | 22 |
| 1997 | 36 |
| 1997 | 6 |
| 1998 | 31 |
| 1998 | 5 |
| 1999 | 10 |
| 2000 | 22 |
| 2001 | 65 |
| 2002 | 54 |
| 2002 | 6 |
| 2003 | 73 |
| 2004 | 26 |
| 2005 | 73 |
| 2006 | 18 |
| 2007 | 18 |
| 2007 | 5 |
| 2008 | 10 |
| 2009 | 23 |
| 2010 | 26 |
| 2010 | 7 |
| 2011 | 38 |
| 2012 | 15 |
| 2012 | 20 |
| 2013 | 21 |
| 2014 | 18 |
| 2015 | 31 |
| 2016 | 58 |
| 2017 | 35 |
| 2018 | 52 |
| 2018 | 7 |
| 2019 | 48 |
| 2019 | 131 |
| 2020 | 66 |
| 2020 | 63 |
| 2021 | 105 |
| 2021 | 41 |
| 2022 | 146 |
| 2022 | 12 |
| 2023 | 72 |
| 2023 | 5 |
| 2024 | 105 |
| 2024 | 10 |