| Year | Count |
|---|---|
| 1915 | 10 |
| 1919 | 5 |
| 1920 | 6 |
| 1922 | 10 |
| 1923 | 12 |
| 1924 | 5 |
| 1925 | 8 |
| 1926 | 5 |
| 1927 | 22 |
| 1929 | 20 |
| 1930 | 16 |
| 1931 | 26 |
| 1932 | 10 |
| 1933 | 16 |
| 1934 | 9 |
| 1935 | 6 |
| 1939 | 6 |
| 1941 | 6 |
| 1950 | 5 |
| 1953 | 7 |
| 1954 | 5 |
| 1970 | 5 |
| 1974 | 6 |
| 1981 | 5 |
| 1984 | 6 |
| 1999 | 12 |
| 2000 | 16 |
| 2001 | 5 |
| 2002 | 10 |
| 2003 | 34 |
| 2004 | 103 |
| 2005 | 107 |
| 2006 | 71 |
| 2007 | 80 |
| 2008 | 122 |
| 2009 | 69 |
| 2010 | 70 |
| 2011 | 127 |
| 2012 | 77 |
| 2013 | 86 |
| 2014 | 86 |
| 2015 | 126 |
| 2016 | 128 |
| 2017 | 109 |
| 2018 | 65 |
| 2019 | 88 |
| 2020 | 109 |
| 2021 | 74 |
| 2022 | 140 |
| 2023 | 144 |
| 2024 | 116 |