← All namesDuke
Raw counts
| Year | Count |
|---|
| 1916 | 6 |
| 1917 | 10 |
| 1919 | 10 |
| 1922 | 15 |
| 1924 | 8 |
| 1925 | 15 |
| 1926 | 14 |
| 1927 | 5 |
| 1930 | 5 |
| 1937 | 12 |
| 1938 | 10 |
| 1939 | 18 |
| 1940 | 6 |
| 1943 | 7 |
| 1946 | 7 |
| 1947 | 24 |
| 1948 | 8 |
| 1950 | 21 |
| 1952 | 15 |
| 1955 | 36 |
| 1956 | 61 |
| 1957 | 59 |
| 1958 | 16 |
| 1959 | 42 |
| 1960 | 23 |
| 1961 | 6 |
| 1962 | 15 |
| 1963 | 26 |
| 1964 | 38 |
| 1965 | 29 |
| 1966 | 26 |
| 1967 | 38 |
| 1968 | 14 |
| 1969 | 19 |
| 1970 | 33 |
| 1971 | 19 |
| 1973 | 11 |
| 1975 | 5 |
| 1977 | 10 |
| 1978 | 16 |
| 1979 | 29 |
| 1980 | 10 |
| 1981 | 20 |
| 1982 | 5 |
| 1984 | 5 |
| 1985 | 5 |
| 1987 | 5 |
| 1988 | 26 |
| 1990 | 5 |
| 1992 | 14 |
| 1993 | 26 |
| 1994 | 10 |
| 1997 | 6 |
| 1998 | 16 |
| 1999 | 10 |
| 2000 | 16 |
| 2001 | 17 |
| 2002 | 18 |
| 2003 | 52 |
| 2004 | 20 |
| 2005 | 19 |
| 2006 | 31 |
| 2007 | 39 |
| 2008 | 73 |
| 2009 | 36 |
| 2010 | 65 |
| 2011 | 86 |
| 2012 | 111 |
| 2013 | 330 |
| 2014 | 323 |
| 2015 | 522 |
| 2016 | 609 |
| 2017 | 626 |
| 2018 | 555 |
| 2019 | 595 |
| 2020 | 393 |
| 2021 | 461 |
| 2022 | 381 |
| 2023 | 364 |
| 2024 | 385 |