| Year | Count |
|---|---|
| 1916 | 9 |
| 1918 | 5 |
| 1919 | 7 |
| 1920 | 11 |
| 1921 | 17 |
| 1924 | 7 |
| 1925 | 5 |
| 1926 | 8 |
| 1928 | 7 |
| 1930 | 5 |
| 1934 | 6 |
| 1936 | 7 |
| 1942 | 6 |
| 1943 | 5 |
| 1951 | 5 |
| 1961 | 6 |
| 1999 | 6 |
| 2000 | 5 |
| 2002 | 6 |
| 2003 | 7 |
| 2004 | 18 |
| 2005 | 37 |
| 2006 | 30 |
| 2007 | 65 |
| 2008 | 172 |
| 2009 | 314 |
| 2010 | 457 |
| 2011 | 626 |
| 2012 | 827 |
| 2013 | 1,052 |
| 2014 | 1,364 |
| 2015 | 1,667 |
| 2016 | 1,837 |
| 2017 | 1,850 |
| 2018 | 2,044 |
| 2019 | 2,333 |
| 2020 | 10 |
| 2020 | 2,593 |
| 2021 | 5 |
| 2021 | 3,249 |
| 2022 | 3,420 |
| 2023 | 3,184 |
| 2024 | 5 |
| 2024 | 3,466 |