| Year | Count |
|---|---|
| 1912 | 10 |
| 1913 | 15 |
| 1914 | 28 |
| 1915 | 17 |
| 1916 | 34 |
| 1917 | 12 |
| 1918 | 17 |
| 1919 | 5 |
| 1920 | 13 |
| 1921 | 29 |
| 1922 | 17 |
| 1923 | 30 |
| 1924 | 34 |
| 1925 | 16 |
| 1926 | 8 |
| 1927 | 17 |
| 1928 | 20 |
| 1929 | 10 |
| 1930 | 20 |
| 1932 | 6 |
| 1933 | 8 |
| 1934 | 6 |
| 1935 | 7 |
| 1937 | 15 |
| 1980 | 5 |
| 1987 | 6 |
| 1995 | 5 |
| 1996 | 6 |
| 1997 | 7 |
| 1998 | 9 |
| 2000 | 5 |
| 2001 | 6 |
| 2002 | 5 |
| 2003 | 40 |
| 2004 | 16 |
| 2005 | 22 |
| 2006 | 5 |
| 2007 | 7 |
| 2008 | 7 |
| 2011 | 25 |
| 2012 | 17 |
| 2013 | 20 |
| 2014 | 21 |
| 2015 | 12 |
| 2016 | 46 |
| 2017 | 35 |
| 2018 | 17 |
| 2019 | 8 |
| 2020 | 5 |
| 2021 | 20 |
| 2022 | 19 |
| 2023 | 26 |
| 2024 | 30 |