| Year | Count |
|---|---|
| 1916 | 7 |
| 1917 | 7 |
| 1921 | 6 |
| 1925 | 10 |
| 1929 | 6 |
| 1943 | 5 |
| 1996 | 5 |
| 1999 | 7 |
| 2004 | 15 |
| 2005 | 25 |
| 2006 | 35 |
| 2007 | 31 |
| 2008 | 89 |
| 2009 | 352 |
| 2010 | 659 |
| 2011 | 718 |
| 2012 | 1,047 |
| 2013 | 1,125 |
| 2014 | 1,481 |
| 2015 | 2,002 |
| 2016 | 2,165 |
| 2017 | 2,233 |
| 2018 | 2,326 |
| 2019 | 2,078 |
| 2020 | 1,765 |
| 2021 | 2,177 |
| 2022 | 5 |
| 2022 | 2,364 |
| 2023 | 2,077 |
| 2024 | 6 |
| 2024 | 1,993 |