| Year | Count |
|---|---|
| 1927 | 5 |
| 1931 | 5 |
| 1962 | 5 |
| 1966 | 6 |
| 1968 | 7 |
| 1969 | 5 |
| 1970 | 5 |
| 1971 | 15 |
| 1972 | 6 |
| 1973 | 5 |
| 1974 | 6 |
| 1975 | 6 |
| 1977 | 5 |
| 1978 | 7 |
| 1995 | 5 |
| 1996 | 14 |
| 1997 | 24 |
| 1998 | 27 |
| 1999 | 31 |
| 2000 | 64 |
| 2001 | 95 |
| 2002 | 93 |
| 2003 | 137 |
| 2004 | 225 |
| 2005 | 221 |
| 2006 | 244 |
| 2007 | 342 |
| 2008 | 343 |
| 2009 | 396 |
| 2010 | 540 |
| 2011 | 605 |
| 2012 | 683 |
| 2013 | 694 |
| 2014 | 825 |
| 2015 | 1,150 |
| 2016 | 1,321 |
| 2017 | 1,631 |
| 2018 | 1,863 |
| 2019 | 1,938 |
| 2020 | 2,137 |
| 2021 | 2,927 |
| 2022 | 3,193 |
| 2023 | 3,889 |
| 2024 | 4,637 |