| Year | Count |
|---|---|
| 1917 | 15 |
| 1957 | 5 |
| 1979 | 12 |
| 1983 | 5 |
| 1985 | 10 |
| 1988 | 17 |
| 1989 | 248 |
| 1990 | 45 |
| 1992 | 5 |
| 1993 | 32 |
| 1994 | 8 |
| 1995 | 10 |
| 1996 | 5 |
| 1997 | 14 |
| 1998 | 40 |
| 1999 | 17 |
| 2001 | 31 |
| 2002 | 24 |
| 2003 | 15 |
| 2004 | 65 |
| 2005 | 44 |
| 2006 | 44 |
| 2007 | 43 |
| 2008 | 70 |
| 2009 | 33 |
| 2010 | 15 |
| 2011 | 39 |
| 2012 | 5 |
| 2013 | 6 |
| 2015 | 21 |
| 2016 | 11 |
| 2017 | 7 |
| 2018 | 12 |
| 2019 | 22 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 20 |
| 2024 | 15 |