| Year | Count |
|---|---|
| 1912 | 14 |
| 1914 | 20 |
| 1915 | 33 |
| 1916 | 17 |
| 1917 | 18 |
| 1918 | 14 |
| 1919 | 24 |
| 1920 | 24 |
| 1921 | 14 |
| 1922 | 27 |
| 1923 | 24 |
| 1924 | 32 |
| 1925 | 35 |
| 1926 | 36 |
| 1927 | 23 |
| 1928 | 27 |
| 1929 | 32 |
| 1930 | 46 |
| 1931 | 15 |
| 1932 | 15 |
| 1933 | 37 |
| 1934 | 24 |
| 1935 | 33 |
| 1936 | 15 |
| 1938 | 10 |
| 1939 | 5 |
| 1940 | 18 |
| 1941 | 15 |
| 1942 | 26 |
| 1945 | 18 |
| 1947 | 5 |
| 1949 | 5 |
| 1951 | 10 |
| 1956 | 23 |
| 1985 | 5 |
| 1991 | 8 |
| 1992 | 6 |
| 1997 | 6 |
| 1998 | 6 |
| 1999 | 11 |
| 2000 | 5 |
| 2005 | 8 |
| 2006 | 7 |
| 2007 | 16 |
| 2009 | 15 |
| 2010 | 22 |
| 2011 | 31 |
| 2012 | 36 |
| 2013 | 67 |
| 2014 | 66 |
| 2015 | 53 |
| 2016 | 63 |
| 2017 | 67 |
| 2018 | 43 |
| 2019 | 10 |
| 2020 | 41 |
| 2021 | 32 |
| 2022 | 39 |
| 2023 | 44 |
| 2024 | 42 |