| Year | Count |
|---|---|
| 1914 | 5 |
| 1916 | 5 |
| 1917 | 5 |
| 1918 | 5 |
| 1920 | 7 |
| 1921 | 7 |
| 1922 | 14 |
| 1923 | 10 |
| 1925 | 14 |
| 1926 | 12 |
| 1927 | 12 |
| 1928 | 12 |
| 1929 | 12 |
| 1930 | 18 |
| 1932 | 7 |
| 1935 | 8 |
| 1936 | 5 |
| 1941 | 5 |
| 1945 | 5 |
| 1946 | 7 |
| 1947 | 8 |
| 1948 | 7 |
| 1950 | 5 |
| 1953 | 5 |
| 2008 | 9 |
| 2009 | 6 |
| 2010 | 8 |
| 2011 | 5 |
| 2012 | 7 |
| 2015 | 24 |
| 2016 | 21 |
| 2017 | 15 |
| 2019 | 20 |
| 2021 | 24 |
| 2022 | 24 |
| 2023 | 26 |
| 2024 | 18 |