| Year | Count |
|---|---|
| 1959 | 15 |
| 1993 | 12 |
| 1994 | 11 |
| 1999 | 5 |
| 2001 | 18 |
| 2002 | 20 |
| 2003 | 10 |
| 2004 | 20 |
| 2006 | 31 |
| 2007 | 49 |
| 2008 | 92 |
| 2009 | 80 |
| 2010 | 46 |
| 2011 | 84 |
| 2012 | 156 |
| 2013 | 179 |
| 2014 | 45 |
| 2014 | 211 |
| 2015 | 24 |
| 2015 | 216 |
| 2016 | 30 |
| 2016 | 405 |
| 2017 | 9 |
| 2017 | 344 |
| 2018 | 16 |
| 2018 | 387 |
| 2019 | 15 |
| 2019 | 359 |
| 2020 | 7 |
| 2020 | 271 |
| 2021 | 36 |
| 2021 | 417 |
| 2022 | 15 |
| 2022 | 335 |
| 2023 | 10 |
| 2023 | 239 |
| 2024 | 10 |
| 2024 | 245 |