| Year | Count |
|---|---|
| 1914 | 5 |
| 1915 | 5 |
| 1916 | 5 |
| 1918 | 8 |
| 1919 | 7 |
| 1920 | 5 |
| 1921 | 7 |
| 1922 | 8 |
| 1924 | 12 |
| 1925 | 7 |
| 1926 | 6 |
| 1927 | 9 |
| 1928 | 7 |
| 1929 | 14 |
| 1930 | 10 |
| 1931 | 5 |
| 1937 | 10 |
| 1938 | 32 |
| 1939 | 29 |
| 1940 | 49 |
| 1941 | 36 |
| 1942 | 25 |
| 1943 | 12 |
| 1944 | 25 |
| 1945 | 22 |
| 1946 | 16 |
| 1947 | 45 |
| 1948 | 5 |
| 1949 | 23 |
| 1952 | 20 |
| 1954 | 18 |
| 1955 | 14 |
| 1957 | 16 |
| 1959 | 10 |
| 1968 | 18 |
| 2005 | 5 |
| 2013 | 10 |
| 2014 | 10 |
| 2017 | 6 |
| 2018 | 7 |
| 2021 | 8 |
| 2022 | 7 |
| 2023 | 12 |
| 2024 | 8 |