| Year | Count |
|---|---|
| 1920 | 5 |
| 1924 | 10 |
| 1926 | 10 |
| 1928 | 14 |
| 1938 | 6 |
| 1949 | 5 |
| 1950 | 5 |
| 1951 | 11 |
| 1952 | 5 |
| 1958 | 12 |
| 1960 | 10 |
| 1961 | 6 |
| 1962 | 6 |
| 1964 | 8 |
| 1965 | 7 |
| 1967 | 5 |
| 1968 | 6 |
| 1969 | 6 |
| 1970 | 5 |
| 1973 | 5 |
| 1977 | 10 |
| 2002 | 5 |
| 2003 | 5 |
| 2007 | 7 |
| 2008 | 8 |
| 2009 | 8 |
| 2010 | 12 |
| 2011 | 11 |
| 2012 | 7 |
| 2013 | 13 |
| 2014 | 13 |
| 2015 | 45 |
| 2016 | 108 |
| 2017 | 126 |
| 2018 | 51 |
| 2019 | 90 |
| 2020 | 78 |
| 2021 | 96 |
| 2022 | 108 |
| 2023 | 100 |
| 2024 | 82 |