| Year | Count |
|---|---|
| 1963 | 25 |
| 1964 | 33 |
| 1967 | 5 |
| 1970 | 13 |
| 1971 | 12 |
| 1973 | 5 |
| 1994 | 5 |
| 1999 | 12 |
| 2003 | 14 |
| 2004 | 6 |
| 2005 | 27 |
| 2006 | 18 |
| 2007 | 18 |
| 2008 | 31 |
| 2009 | 20 |
| 2010 | 47 |
| 2011 | 59 |
| 2012 | 106 |
| 2013 | 70 |
| 2014 | 106 |
| 2015 | 43 |
| 2016 | 110 |
| 2017 | 91 |
| 2018 | 63 |
| 2019 | 243 |
| 2020 | 123 |
| 2021 | 62 |
| 2022 | 88 |
| 2023 | 50 |
| 2024 | 38 |