| Year | Count |
|---|---|
| 1912 | 5 |
| 1915 | 6 |
| 1916 | 5 |
| 1917 | 7 |
| 1918 | 5 |
| 1920 | 5 |
| 1923 | 10 |
| 1924 | 14 |
| 1927 | 8 |
| 1928 | 7 |
| 1940 | 6 |
| 1941 | 5 |
| 1942 | 5 |
| 1945 | 7 |
| 1949 | 7 |
| 1955 | 30 |
| 1956 | 20 |
| 1957 | 10 |
| 1958 | 10 |
| 1960 | 14 |
| 1964 | 10 |
| 1965 | 12 |
| 1981 | 5 |
| 1983 | 5 |
| 1992 | 5 |
| 1993 | 5 |
| 1994 | 5 |
| 1996 | 7 |
| 2000 | 5 |
| 2005 | 15 |
| 2006 | 5 |
| 2007 | 6 |
| 2008 | 6 |
| 2010 | 5 |
| 2011 | 10 |
| 2012 | 10 |
| 2014 | 18 |
| 2016 | 12 |
| 2017 | 33 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 8 |
| 2021 | 16 |
| 2022 | 27 |
| 2023 | 15 |
| 2024 | 30 |