| Year | Count |
|---|---|
| 1916 | 11 |
| 1917 | 22 |
| 1918 | 10 |
| 1922 | 6 |
| 1924 | 21 |
| 1925 | 5 |
| 1926 | 8 |
| 1929 | 5 |
| 1940 | 11 |
| 1941 | 6 |
| 1942 | 8 |
| 1943 | 6 |
| 1944 | 10 |
| 1945 | 7 |
| 1947 | 5 |
| 1948 | 10 |
| 1950 | 6 |
| 1952 | 5 |
| 1953 | 5 |
| 1955 | 6 |
| 1956 | 5 |
| 1957 | 10 |
| 1958 | 16 |
| 1960 | 14 |
| 1963 | 5 |
| 1970 | 10 |
| 1971 | 6 |
| 1973 | 11 |
| 1975 | 5 |
| 1984 | 5 |
| 1988 | 10 |
| 2009 | 7 |
| 2010 | 5 |
| 2011 | 5 |
| 2013 | 8 |
| 2014 | 10 |
| 2015 | 17 |
| 2016 | 22 |
| 2017 | 19 |
| 2018 | 22 |
| 2019 | 24 |
| 2020 | 27 |
| 2021 | 26 |
| 2022 | 39 |
| 2023 | 30 |
| 2024 | 37 |