| Year | Count |
|---|---|
| 1918 | 6 |
| 1922 | 10 |
| 1924 | 5 |
| 1925 | 5 |
| 1926 | 6 |
| 1927 | 10 |
| 1929 | 8 |
| 1930 | 10 |
| 1931 | 5 |
| 1932 | 16 |
| 1933 | 5 |
| 1934 | 11 |
| 1935 | 5 |
| 1938 | 7 |
| 1939 | 5 |
| 1940 | 22 |
| 1941 | 5 |
| 1942 | 5 |
| 1946 | 21 |
| 1947 | 21 |
| 1953 | 10 |
| 1955 | 15 |
| 1956 | 15 |
| 1957 | 14 |
| 1964 | 18 |
| 1966 | 23 |
| 1969 | 20 |
| 1980 | 10 |
| 2004 | 5 |
| 2009 | 5 |
| 2010 | 7 |
| 2012 | 6 |
| 2014 | 10 |
| 2015 | 33 |
| 2016 | 45 |
| 2017 | 32 |
| 2018 | 23 |
| 2019 | 11 |
| 2020 | 48 |
| 2021 | 7 |
| 2022 | 20 |
| 2023 | 5 |
| 2024 | 5 |