| Year | Count |
|---|---|
| 1912 | 5 |
| 1915 | 35 |
| 1916 | 31 |
| 1917 | 57 |
| 1918 | 56 |
| 1919 | 55 |
| 1920 | 31 |
| 1921 | 35 |
| 1922 | 61 |
| 1923 | 41 |
| 1924 | 14 |
| 1925 | 82 |
| 1926 | 34 |
| 1927 | 15 |
| 1928 | 36 |
| 1929 | 46 |
| 1930 | 50 |
| 1931 | 57 |
| 1932 | 31 |
| 1933 | 17 |
| 1934 | 19 |
| 1935 | 21 |
| 1936 | 29 |
| 1937 | 7 |
| 1938 | 25 |
| 1939 | 29 |
| 1940 | 6 |
| 1941 | 10 |
| 1942 | 20 |
| 1946 | 13 |
| 1947 | 15 |
| 1959 | 12 |
| 1960 | 5 |
| 1962 | 12 |
| 2004 | 5 |
| 2008 | 12 |
| 2009 | 5 |
| 2010 | 24 |
| 2011 | 47 |
| 2012 | 61 |
| 2013 | 69 |
| 2014 | 65 |
| 2015 | 73 |
| 2016 | 60 |
| 2017 | 56 |
| 2018 | 37 |
| 2019 | 19 |
| 2020 | 24 |
| 2021 | 14 |
| 2022 | 18 |
| 2023 | 5 |