| Year | Count |
|---|---|
| 1915 | 5 |
| 1916 | 18 |
| 1917 | 10 |
| 1919 | 12 |
| 1920 | 13 |
| 1921 | 8 |
| 1922 | 9 |
| 1923 | 18 |
| 1924 | 9 |
| 1925 | 13 |
| 1926 | 8 |
| 1927 | 12 |
| 1928 | 8 |
| 1929 | 7 |
| 1930 | 12 |
| 1931 | 6 |
| 1932 | 10 |
| 1933 | 7 |
| 1934 | 9 |
| 1935 | 8 |
| 1936 | 9 |
| 1938 | 8 |
| 1939 | 6 |
| 1940 | 7 |
| 1941 | 5 |
| 1943 | 10 |
| 1944 | 7 |
| 1945 | 7 |
| 1948 | 5 |
| 1950 | 7 |
| 1954 | 5 |
| 1955 | 6 |
| 1965 | 5 |
| 1970 | 5 |
| 1973 | 5 |
| 1992 | 5 |
| 1993 | 5 |
| 2001 | 6 |
| 2002 | 9 |
| 2003 | 5 |
| 2005 | 15 |
| 2006 | 5 |
| 2007 | 10 |
| 2008 | 7 |
| 2010 | 20 |
| 2011 | 22 |
| 2012 | 5 |
| 2013 | 26 |
| 2014 | 57 |
| 2015 | 104 |
| 2016 | 99 |
| 2017 | 112 |
| 2018 | 101 |
| 2019 | 51 |
| 2020 | 88 |
| 2021 | 69 |
| 2022 | 63 |
| 2023 | 95 |
| 2024 | 70 |