| Year | Count |
|---|---|
| 1917 | 10 |
| 1919 | 12 |
| 1920 | 26 |
| 1921 | 17 |
| 1922 | 10 |
| 1923 | 5 |
| 1924 | 19 |
| 1925 | 5 |
| 1926 | 5 |
| 1927 | 12 |
| 1929 | 18 |
| 1931 | 15 |
| 1932 | 27 |
| 1960 | 6 |
| 1985 | 10 |
| 1987 | 16 |
| 1991 | 12 |
| 1993 | 17 |
| 1996 | 17 |
| 1997 | 23 |
| 1998 | 47 |
| 1999 | 62 |
| 2000 | 26 |
| 2001 | 25 |
| 2002 | 29 |
| 2003 | 61 |
| 2004 | 54 |
| 2005 | 62 |
| 2006 | 67 |
| 2007 | 46 |
| 2007 | 10 |
| 2008 | 122 |
| 2009 | 70 |
| 2010 | 80 |
| 2011 | 102 |
| 2012 | 119 |
| 2013 | 158 |
| 2013 | 5 |
| 2014 | 259 |
| 2014 | 5 |
| 2015 | 385 |
| 2016 | 324 |
| 2016 | 17 |
| 2017 | 249 |
| 2017 | 7 |
| 2018 | 313 |
| 2018 | 12 |
| 2019 | 377 |
| 2019 | 31 |
| 2020 | 404 |
| 2020 | 59 |
| 2021 | 551 |
| 2021 | 41 |
| 2022 | 600 |
| 2022 | 54 |
| 2023 | 631 |
| 2023 | 71 |
| 2024 | 585 |
| 2024 | 64 |