| Year | Count |
|---|---|
| 1915 | 5 |
| 1916 | 12 |
| 1918 | 5 |
| 1919 | 21 |
| 1920 | 24 |
| 1921 | 21 |
| 1923 | 21 |
| 1924 | 17 |
| 1925 | 6 |
| 1926 | 8 |
| 1927 | 6 |
| 1929 | 10 |
| 1930 | 10 |
| 1933 | 5 |
| 1935 | 5 |
| 1938 | 6 |
| 1940 | 5 |
| 1947 | 15 |
| 1990 | 5 |
| 2001 | 5 |
| 2002 | 15 |
| 2003 | 14 |
| 2005 | 7 |
| 2006 | 6 |
| 2007 | 62 |
| 2008 | 39 |
| 2009 | 73 |
| 2010 | 34 |
| 2011 | 51 |
| 2012 | 56 |
| 2013 | 34 |
| 2014 | 38 |
| 2015 | 89 |
| 2016 | 52 |
| 2017 | 36 |
| 2018 | 54 |
| 2019 | 33 |
| 2020 | 20 |
| 2021 | 32 |
| 2022 | 29 |
| 2023 | 14 |
| 2024 | 28 |