| Year | Count |
|---|---|
| 1916 | 6 |
| 1922 | 13 |
| 1926 | 16 |
| 1927 | 8 |
| 1929 | 5 |
| 1933 | 6 |
| 1952 | 5 |
| 1961 | 7 |
| 1962 | 11 |
| 1964 | 6 |
| 1967 | 6 |
| 1969 | 5 |
| 1970 | 6 |
| 1972 | 6 |
| 1976 | 30 |
| 1977 | 6 |
| 1978 | 15 |
| 1980 | 22 |
| 1981 | 11 |
| 1982 | 5 |
| 1985 | 7 |
| 1987 | 10 |
| 1988 | 6 |
| 1989 | 7 |
| 1991 | 6 |
| 1993 | 8 |
| 1994 | 5 |
| 1995 | 5 |
| 1996 | 14 |
| 1998 | 10 |
| 1999 | 6 |
| 2000 | 7 |
| 2001 | 14 |
| 2003 | 7 |
| 2004 | 7 |
| 2005 | 19 |
| 2007 | 13 |
| 2008 | 6 |
| 2009 | 11 |
| 2010 | 10 |
| 2011 | 28 |
| 2012 | 14 |
| 2013 | 27 |
| 2014 | 14 |
| 2015 | 22 |
| 2016 | 12 |
| 2017 | 44 |
| 2018 | 92 |
| 2019 | 98 |
| 2020 | 95 |
| 2021 | 245 |
| 2022 | 204 |
| 2023 | 306 |
| 2024 | 517 |