| Year | Count |
|---|---|
| 1916 | 5 |
| 1925 | 15 |
| 1942 | 10 |
| 1943 | 10 |
| 1947 | 10 |
| 1955 | 10 |
| 1963 | 17 |
| 1964 | 31 |
| 1965 | 12 |
| 1968 | 15 |
| 1970 | 5 |
| 1972 | 5 |
| 1973 | 8 |
| 1974 | 11 |
| 1975 | 5 |
| 1976 | 7 |
| 1978 | 10 |
| 1980 | 7 |
| 1999 | 18 |
| 2000 | 10 |
| 2002 | 5 |
| 2003 | 5 |
| 2005 | 27 |
| 2006 | 15 |
| 2007 | 15 |
| 2010 | 17 |
| 2011 | 10 |
| 2012 | 10 |
| 2013 | 32 |
| 2014 | 30 |
| 2015 | 11 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 15 |
| 2020 | 20 |
| 2021 | 24 |