| Year | Count |
|---|---|
| 1913 | 20 |
| 1915 | 53 |
| 1916 | 12 |
| 1917 | 37 |
| 1918 | 46 |
| 1919 | 40 |
| 1920 | 49 |
| 1921 | 60 |
| 1922 | 66 |
| 1923 | 39 |
| 1924 | 16 |
| 1925 | 15 |
| 1926 | 39 |
| 1927 | 40 |
| 1928 | 25 |
| 1929 | 5 |
| 1930 | 20 |
| 1931 | 15 |
| 1933 | 5 |
| 1940 | 5 |
| 1942 | 5 |
| 1947 | 10 |
| 1949 | 5 |
| 1953 | 6 |
| 1965 | 5 |
| 1994 | 6 |
| 1995 | 6 |
| 1996 | 8 |
| 1997 | 5 |
| 1998 | 10 |
| 1999 | 12 |
| 2000 | 5 |
| 2001 | 6 |
| 2002 | 34 |
| 2003 | 31 |
| 2004 | 38 |
| 2005 | 33 |
| 2006 | 24 |
| 2007 | 48 |
| 2008 | 31 |
| 2009 | 48 |
| 2010 | 70 |
| 2011 | 90 |
| 2012 | 78 |
| 2013 | 113 |
| 2014 | 159 |
| 2015 | 253 |
| 2016 | 252 |
| 2017 | 220 |
| 2018 | 175 |
| 2019 | 160 |
| 2020 | 77 |
| 2021 | 41 |
| 2022 | 60 |
| 2023 | 53 |
| 2024 | 51 |