| Year | Count |
|---|---|
| 1912 | 12 |
| 1913 | 12 |
| 1914 | 5 |
| 1915 | 24 |
| 1916 | 10 |
| 1917 | 24 |
| 1918 | 32 |
| 1919 | 36 |
| 1920 | 35 |
| 1921 | 32 |
| 1922 | 17 |
| 1923 | 12 |
| 1924 | 21 |
| 1925 | 10 |
| 1926 | 15 |
| 1929 | 11 |
| 1931 | 9 |
| 1933 | 5 |
| 1935 | 8 |
| 1936 | 16 |
| 1941 | 19 |
| 1946 | 5 |
| 1948 | 10 |
| 1955 | 5 |
| 1963 | 10 |
| 1991 | 5 |
| 1993 | 12 |
| 1994 | 29 |
| 1995 | 40 |
| 1996 | 21 |
| 1997 | 33 |
| 1998 | 82 |
| 1999 | 76 |
| 2000 | 67 |
| 2001 | 90 |
| 2002 | 45 |
| 2003 | 64 |
| 2004 | 62 |
| 2005 | 130 |
| 2006 | 137 |
| 2007 | 103 |
| 2008 | 156 |
| 2009 | 103 |
| 2010 | 117 |
| 2011 | 127 |
| 2012 | 170 |
| 2013 | 98 |
| 2014 | 184 |
| 2015 | 190 |
| 2016 | 205 |
| 2017 | 201 |
| 2018 | 186 |
| 2019 | 186 |
| 2020 | 152 |
| 2021 | 183 |
| 2022 | 181 |
| 2023 | 107 |
| 2024 | 125 |