| Year | Count |
|---|---|
| 1945 | 6 |
| 1949 | 10 |
| 1950 | 10 |
| 1969 | 5 |
| 1971 | 12 |
| 1974 | 6 |
| 1975 | 5 |
| 1985 | 5 |
| 1987 | 20 |
| 1989 | 5 |
| 1991 | 5 |
| 1994 | 29 |
| 1995 | 15 |
| 1999 | 18 |
| 2000 | 25 |
| 2001 | 26 |
| 2002 | 34 |
| 2003 | 24 |
| 2005 | 20 |
| 2006 | 6 |
| 2007 | 12 |
| 2008 | 35 |
| 2010 | 31 |
| 2011 | 10 |
| 2012 | 39 |
| 2013 | 30 |
| 2014 | 28 |
| 2016 | 22 |
| 2017 | 12 |
| 2018 | 10 |
| 2020 | 13 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 5 |