| Year | Count |
|---|---|
| 1925 | 6 |
| 1926 | 5 |
| 1928 | 6 |
| 1929 | 5 |
| 1930 | 6 |
| 1931 | 7 |
| 1932 | 7 |
| 1933 | 7 |
| 1935 | 7 |
| 1937 | 5 |
| 1939 | 5 |
| 1940 | 5 |
| 1944 | 15 |
| 1947 | 18 |
| 1952 | 10 |
| 1954 | 6 |
| 1970 | 10 |
| 2008 | 7 |
| 2009 | 23 |
| 2010 | 12 |
| 2011 | 34 |
| 2012 | 35 |
| 2013 | 117 |
| 2014 | 129 |
| 2015 | 208 |
| 2016 | 223 |
| 2017 | 226 |
| 2018 | 204 |
| 2018 | 12 |
| 2019 | 168 |
| 2020 | 280 |
| 2021 | 308 |
| 2022 | 347 |
| 2023 | 321 |
| 2024 | 492 |
| 2024 | 10 |