| Year | Count |
|---|---|
| 1915 | 5 |
| 1920 | 5 |
| 1921 | 6 |
| 1922 | 10 |
| 1924 | 17 |
| 1925 | 20 |
| 1926 | 40 |
| 1927 | 10 |
| 1928 | 47 |
| 1929 | 29 |
| 1930 | 27 |
| 1931 | 49 |
| 1932 | 5 |
| 1933 | 20 |
| 1934 | 26 |
| 1935 | 31 |
| 1936 | 15 |
| 1937 | 6 |
| 1938 | 8 |
| 1939 | 18 |
| 1940 | 11 |
| 1941 | 39 |
| 1942 | 5 |
| 1943 | 43 |
| 1944 | 5 |
| 1945 | 41 |
| 1947 | 5 |
| 1950 | 10 |
| 1951 | 22 |
| 1954 | 5 |
| 1955 | 6 |
| 1956 | 5 |
| 1957 | 10 |
| 1962 | 6 |
| 1963 | 7 |
| 1964 | 22 |
| 1968 | 11 |
| 1969 | 12 |
| 1978 | 6 |
| 1986 | 6 |
| 2006 | 5 |
| 2009 | 5 |
| 2010 | 8 |
| 2013 | 5 |
| 2016 | 5 |
| 2018 | 6 |