| Year | Count |
|---|---|
| 1928 | 5 |
| 1949 | 5 |
| 1952 | 6 |
| 1954 | 18 |
| 1955 | 20 |
| 1956 | 5 |
| 1958 | 10 |
| 1960 | 14 |
| 1961 | 12 |
| 1963 | 6 |
| 1964 | 30 |
| 1967 | 10 |
| 1968 | 6 |
| 1969 | 10 |
| 1970 | 15 |
| 1971 | 5 |
| 1974 | 5 |
| 1990 | 5 |
| 1992 | 6 |
| 1996 | 8 |
| 1997 | 18 |
| 1998 | 5 |
| 1999 | 6 |
| 2000 | 23 |
| 2001 | 5 |
| 2001 | 5 |
| 2002 | 18 |
| 2003 | 34 |
| 2004 | 36 |
| 2005 | 29 |
| 2006 | 16 |
| 2007 | 13 |
| 2008 | 14 |
| 2009 | 11 |
| 2010 | 22 |
| 2011 | 26 |
| 2012 | 47 |
| 2013 | 21 |
| 2014 | 35 |
| 2015 | 59 |
| 2016 | 82 |
| 2017 | 52 |
| 2018 | 107 |
| 2019 | 158 |
| 2020 | 140 |
| 2021 | 15 |
| 2021 | 178 |
| 2022 | 6 |
| 2022 | 184 |
| 2023 | 10 |
| 2023 | 162 |
| 2024 | 158 |