| Year | Count |
|---|---|
| 1915 | 5 |
| 1922 | 8 |
| 1924 | 6 |
| 1929 | 5 |
| 1930 | 26 |
| 1931 | 17 |
| 1932 | 5 |
| 1933 | 36 |
| 1934 | 29 |
| 1935 | 42 |
| 1936 | 86 |
| 1937 | 21 |
| 1938 | 68 |
| 1939 | 32 |
| 1940 | 39 |
| 1941 | 51 |
| 1942 | 39 |
| 1943 | 32 |
| 1944 | 78 |
| 1945 | 37 |
| 1946 | 39 |
| 1947 | 23 |
| 1948 | 49 |
| 1949 | 26 |
| 1950 | 22 |
| 1951 | 28 |
| 1952 | 20 |
| 1953 | 18 |
| 1954 | 44 |
| 1955 | 24 |
| 1957 | 29 |
| 1958 | 29 |
| 1959 | 39 |
| 1960 | 17 |
| 1965 | 5 |
| 1969 | 5 |
| 2006 | 6 |
| 2010 | 5 |
| 2011 | 6 |
| 2012 | 7 |
| 2014 | 6 |
| 2015 | 9 |
| 2016 | 5 |
| 2018 | 7 |
| 2020 | 14 |
| 2021 | 10 |
| 2022 | 9 |
| 2023 | 18 |
| 2024 | 14 |