| Year | Count |
|---|---|
| 1910 | 6 |
| 1912 | 26 |
| 1913 | 33 |
| 1914 | 35 |
| 1915 | 61 |
| 1916 | 56 |
| 1917 | 94 |
| 1918 | 68 |
| 1919 | 76 |
| 1920 | 52 |
| 1921 | 61 |
| 1922 | 66 |
| 1923 | 84 |
| 1924 | 99 |
| 1925 | 40 |
| 1926 | 48 |
| 1927 | 7 |
| 1929 | 9 |
| 1930 | 27 |
| 1931 | 5 |
| 1933 | 11 |
| 1934 | 10 |
| 1937 | 8 |
| 1940 | 5 |
| 1941 | 5 |
| 1942 | 6 |
| 1946 | 5 |
| 2000 | 10 |
| 2001 | 22 |
| 2003 | 71 |
| 2004 | 46 |
| 2005 | 45 |
| 2006 | 49 |
| 2007 | 22 |
| 2008 | 23 |
| 2009 | 11 |
| 2010 | 17 |
| 2015 | 5 |