| Year | Count |
|---|---|
| 1910 | 5 |
| 1913 | 5 |
| 1914 | 5 |
| 1916 | 19 |
| 1917 | 5 |
| 1918 | 5 |
| 1919 | 12 |
| 1920 | 6 |
| 1921 | 15 |
| 1923 | 5 |
| 1924 | 5 |
| 1926 | 5 |
| 1978 | 12 |
| 1989 | 6 |
| 1996 | 6 |
| 1997 | 5 |
| 1998 | 12 |
| 2000 | 43 |
| 2001 | 28 |
| 2002 | 70 |
| 2003 | 98 |
| 2004 | 110 |
| 2005 | 197 |
| 2006 | 284 |
| 2007 | 574 |
| 2008 | 823 |
| 2009 | 873 |
| 2010 | 1,006 |
| 2011 | 1,161 |
| 2012 | 1,176 |
| 2013 | 1,087 |
| 2014 | 1,060 |
| 2015 | 1,149 |
| 2016 | 1,254 |
| 2017 | 1,397 |
| 2018 | 1,167 |
| 2019 | 1,282 |
| 2020 | 1,358 |
| 2021 | 1,448 |
| 2022 | 1,645 |
| 2023 | 1,799 |
| 2024 | 1,926 |