| Year | Count |
|---|---|
| 1912 | 5 |
| 1914 | 10 |
| 1915 | 22 |
| 1916 | 21 |
| 1917 | 22 |
| 1918 | 31 |
| 1919 | 24 |
| 1920 | 52 |
| 1921 | 50 |
| 1922 | 36 |
| 1923 | 30 |
| 1924 | 45 |
| 1925 | 24 |
| 1926 | 41 |
| 1927 | 17 |
| 1928 | 29 |
| 1929 | 26 |
| 1930 | 20 |
| 1932 | 25 |
| 1933 | 10 |
| 1934 | 6 |
| 1935 | 8 |
| 1936 | 8 |
| 1937 | 10 |
| 1938 | 11 |
| 1939 | 6 |
| 1940 | 18 |
| 1941 | 20 |
| 1942 | 5 |
| 1943 | 5 |
| 1947 | 10 |
| 1948 | 25 |
| 1958 | 5 |
| 1965 | 10 |
| 1980 | 5 |
| 1999 | 18 |
| 2000 | 5 |
| 2001 | 5 |
| 2003 | 9 |
| 2004 | 19 |
| 2006 | 5 |
| 2007 | 49 |
| 2008 | 58 |
| 2009 | 42 |
| 2010 | 52 |
| 2011 | 63 |
| 2012 | 90 |
| 2013 | 86 |
| 2014 | 114 |
| 2015 | 125 |
| 2016 | 76 |
| 2017 | 164 |
| 2018 | 82 |
| 2019 | 51 |
| 2020 | 53 |
| 2021 | 41 |
| 2022 | 60 |
| 2023 | 44 |
| 2024 | 60 |