| Year | Count |
|---|---|
| 1913 | 6 |
| 1914 | 5 |
| 1915 | 17 |
| 1916 | 6 |
| 1917 | 14 |
| 1918 | 7 |
| 1919 | 20 |
| 1920 | 8 |
| 1921 | 40 |
| 1922 | 13 |
| 1923 | 10 |
| 1924 | 31 |
| 1925 | 7 |
| 1926 | 24 |
| 1928 | 22 |
| 1930 | 14 |
| 1931 | 27 |
| 1934 | 10 |
| 1935 | 12 |
| 1940 | 12 |
| 1971 | 5 |
| 1974 | 5 |
| 1975 | 7 |
| 1982 | 5 |
| 1983 | 6 |
| 1984 | 10 |
| 1986 | 6 |
| 1988 | 5 |
| 1990 | 5 |
| 1991 | 9 |
| 1992 | 10 |
| 1993 | 6 |
| 1994 | 7 |
| 1995 | 5 |
| 1996 | 15 |
| 1997 | 10 |
| 1998 | 6 |
| 1999 | 7 |
| 2000 | 26 |
| 2001 | 39 |
| 2002 | 6 |
| 2004 | 5 |
| 2005 | 28 |
| 2006 | 27 |
| 2007 | 26 |
| 2008 | 34 |
| 2009 | 32 |
| 2010 | 20 |
| 2011 | 20 |
| 2012 | 32 |
| 2013 | 30 |
| 2014 | 19 |
| 2015 | 6 |
| 2018 | 10 |
| 2022 | 15 |
| 2023 | 5 |