| Year | Count |
|---|---|
| 1918 | 10 |
| 1927 | 12 |
| 1929 | 12 |
| 1930 | 21 |
| 1931 | 5 |
| 1936 | 6 |
| 1987 | 12 |
| 1988 | 20 |
| 1990 | 5 |
| 1992 | 25 |
| 1993 | 5 |
| 1994 | 28 |
| 1995 | 10 |
| 1996 | 36 |
| 1997 | 43 |
| 1998 | 36 |
| 2001 | 22 |
| 2003 | 6 |
| 2004 | 18 |
| 2005 | 41 |
| 2006 | 18 |
| 2007 | 9 |
| 2008 | 45 |
| 2009 | 6 |
| 2010 | 12 |
| 2011 | 9 |
| 2015 | 10 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 6 |
| 2019 | 9 |
| 2020 | 5 |
| 2021 | 8 |
| 2022 | 17 |
| 2023 | 5 |
| 2024 | 8 |