| Year | Count |
|---|---|
| 1915 | 28 |
| 1916 | 21 |
| 1917 | 25 |
| 1918 | 42 |
| 1919 | 16 |
| 1920 | 12 |
| 1921 | 16 |
| 1923 | 18 |
| 1924 | 39 |
| 1925 | 26 |
| 1926 | 7 |
| 1927 | 44 |
| 1928 | 16 |
| 1929 | 41 |
| 1930 | 20 |
| 1931 | 11 |
| 1932 | 7 |
| 1934 | 10 |
| 1935 | 10 |
| 1936 | 5 |
| 1937 | 6 |
| 1938 | 12 |
| 1943 | 11 |
| 1944 | 11 |
| 1952 | 5 |
| 1953 | 15 |
| 1982 | 5 |
| 1983 | 13 |
| 1985 | 7 |
| 1986 | 6 |
| 1988 | 11 |
| 1989 | 5 |
| 1990 | 8 |
| 1991 | 6 |
| 1992 | 23 |
| 1993 | 7 |
| 1994 | 5 |
| 1995 | 7 |
| 1999 | 6 |
| 2001 | 11 |
| 2004 | 5 |
| 2005 | 6 |
| 2006 | 5 |
| 2008 | 15 |
| 2009 | 10 |
| 2010 | 5 |
| 2011 | 8 |
| 2013 | 66 |
| 2014 | 87 |
| 2015 | 73 |
| 2016 | 40 |
| 2017 | 84 |
| 2018 | 23 |
| 2019 | 31 |
| 2020 | 34 |
| 2021 | 80 |
| 2022 | 78 |
| 2023 | 42 |
| 2024 | 46 |