| Year | Count |
|---|---|
| 1915 | 5 |
| 1924 | 5 |
| 1932 | 6 |
| 1939 | 7 |
| 1940 | 12 |
| 1942 | 6 |
| 1943 | 5 |
| 1944 | 5 |
| 1947 | 5 |
| 1948 | 5 |
| 1953 | 5 |
| 1981 | 9 |
| 1987 | 7 |
| 1991 | 9 |
| 1992 | 14 |
| 1993 | 8 |
| 1994 | 7 |
| 1995 | 22 |
| 1996 | 6 |
| 1997 | 14 |
| 1998 | 5 |
| 1999 | 23 |
| 2000 | 8 |
| 2001 | 24 |
| 2002 | 6 |
| 2003 | 20 |
| 2005 | 5 |
| 2006 | 12 |
| 2007 | 10 |
| 2008 | 7 |
| 2009 | 5 |
| 2010 | 28 |
| 2011 | 12 |
| 2012 | 24 |
| 2013 | 5 |
| 2014 | 34 |
| 2015 | 7 |
| 2016 | 80 |
| 2017 | 24 |
| 2018 | 30 |
| 2019 | 47 |
| 2020 | 41 |
| 2021 | 124 |
| 2022 | 81 |
| 2023 | 41 |
| 2024 | 40 |