| Year | Count |
|---|---|
| 1976 | 12 |
| 1977 | 12 |
| 1979 | 12 |
| 1981 | 5 |
| 1982 | 6 |
| 1985 | 6 |
| 1986 | 6 |
| 1991 | 12 |
| 1992 | 8 |
| 1993 | 7 |
| 1996 | 6 |
| 1998 | 14 |
| 2000 | 10 |
| 2001 | 14 |
| 2003 | 5 |
| 2004 | 5 |
| 2005 | 11 |
| 2006 | 11 |
| 2010 | 29 |
| 2011 | 15 |
| 2012 | 12 |
| 2013 | 5 |
| 2014 | 18 |
| 2015 | 9 |
| 2016 | 5 |
| 2017 | 40 |
| 2018 | 27 |
| 2019 | 36 |
| 2019 | 5 |
| 2020 | 45 |
| 2021 | 21 |
| 2022 | 43 |
| 2022 | 5 |
| 2023 | 44 |
| 2023 | 10 |
| 2024 | 51 |