| Year | Count |
|---|---|
| 1910 | 15 |
| 1911 | 5 |
| 1911 | 6 |
| 1915 | 10 |
| 1915 | 10 |
| 1917 | 10 |
| 1917 | 12 |
| 1922 | 10 |
| 1923 | 10 |
| 1928 | 12 |
| 1930 | 20 |
| 1931 | 5 |
| 1934 | 5 |
| 1974 | 6 |
| 1979 | 12 |
| 2001 | 8 |
| 2002 | 24 |
| 2004 | 22 |
| 2005 | 15 |
| 2006 | 14 |
| 2007 | 38 |
| 2008 | 17 |
| 2009 | 34 |
| 2010 | 28 |
| 2011 | 20 |
| 2012 | 46 |
| 2013 | 82 |
| 2014 | 68 |
| 2015 | 88 |
| 2016 | 66 |
| 2017 | 91 |
| 2018 | 81 |
| 2019 | 81 |
| 2020 | 205 |
| 2021 | 233 |
| 2022 | 420 |
| 2023 | 402 |
| 2024 | 336 |