| Year | Count |
|---|---|
| 1910 | 26 |
| 1911 | 32 |
| 1912 | 17 |
| 1913 | 46 |
| 1914 | 94 |
| 1915 | 106 |
| 1916 | 159 |
| 1917 | 105 |
| 1918 | 140 |
| 1919 | 115 |
| 1920 | 117 |
| 1921 | 147 |
| 1922 | 90 |
| 1923 | 86 |
| 1924 | 151 |
| 1925 | 116 |
| 1926 | 125 |
| 1927 | 84 |
| 1928 | 88 |
| 1929 | 69 |
| 1930 | 96 |
| 1931 | 27 |
| 1932 | 29 |
| 1933 | 27 |
| 1934 | 26 |
| 1935 | 28 |
| 1936 | 30 |
| 1937 | 21 |
| 1938 | 23 |
| 1939 | 22 |
| 1941 | 5 |
| 1942 | 13 |
| 1943 | 14 |
| 1945 | 10 |
| 1946 | 6 |
| 1947 | 13 |
| 1948 | 5 |
| 1949 | 17 |
| 1951 | 7 |
| 1952 | 6 |
| 1953 | 11 |
| 1961 | 5 |
| 1962 | 6 |
| 2010 | 17 |
| 2011 | 24 |
| 2012 | 5 |
| 2013 | 43 |
| 2014 | 60 |
| 2015 | 122 |
| 2016 | 185 |
| 2017 | 229 |
| 2018 | 227 |
| 2019 | 173 |
| 2020 | 198 |
| 2021 | 257 |
| 2022 | 224 |
| 2023 | 280 |
| 2024 | 317 |