University of Minnesota
| Year | Teams | Winning team |
|---|---|---|
| 1916 | 4 | Iowa State |
| 1919 | 6 | Minnesota |
| 1920 | 6 | Minnesota |
| 1921 | 8 | Iowa State |
| 1922 | 10 | Kansas State |
| 1923 | 10 | Iowa State |
| 1924 | 12 | UW-Madison |
| 1925 | 11 | Iowa State |
| 1926 | 13 | Kansas State |
| 1927 | 9 | Iowa State |
| 1928 | 11 | Nebraska |
| 1929 | 12 | Kansas State |
| Year | Teams | Winning team |
|---|---|---|
| 1930 | 10 | Iowa State |
| 1931 | 8 | Kansas State |
| 1932 | 15 | Iowa State |
| 1933 | 18 | Iowa State |
| 1934 | 16 | Cornell (NY) |
| 1935 | 13 | Purdue (IN) |
| 1936 | 9 | Illinois |
| 1937 | 11 | Michigan State |
| 1938 | 12 | Michigan State |
| 1939 | 13 | UW-Madison |
| Year | Teams | Winning team |
|---|---|---|
| 1940 | 11 | Iowa State |
| 1941 | 11 | Kansas State |
| 1942 | 13 | Iowa State |
| 1943 to 1945 | No contest | |
| 1946 | 11 | Iowa State |
| 1947 | 19 | Cornell (NY) |
| 1948 | 23 | Tennessee |
| 1949 | 30 | Iowa State |
| Year | Teams | Winning team |
|---|---|---|
| 1950 | 28 | Ohio State |
| 1951 | 31 | Iowa State |
| 1952 | 30 | Cornell (NY) |
| 1953 | 33 | Ohio State |
| 1954 | 29 | Arkansas |
| 1955 | 34 | Cornell (NY) |
| 1956 | 33 | Oklahoma State |
| 1957 | 33 | Kansas State |
| 1958 | 31 | Cornell (NY) |
| 1959 | 33 | Kentucky |
| Year | Teams | Winning team |
|---|---|---|
| 1960 | 27 | Washington State |
| 1961 | 30 | Cornell (NY) |
| 1962 | 31 | Ohio State |
| 1963 | 29 | Iowa State |
| 1964 | 32 | Penn State |
| 1965 | 27 | Minnesota |
| 1966 | 25 | Ohio State |
| 1967 | 29 | Oregon State |
| 1968 | 31 | Purdue (IN) |
| 1969 | 31 | Cornell (NY) |
| Year | Teams | Winning team |
|---|---|---|
| 1970 | 32 | Illinois |
| 1971 | 29 | Cornell (NY) |
| 1972 | 33 | Cal Poly |
| 1973 | 31 | Cal Poly |
| 1974 | 31 | Iowa State |
| 1975 | 31 | Virginia Tech |
| 1976 | 30 | Cal State-Fresno |
| 1977 | 36 | Cal State-Fresno |
| 1978 | 37 | Minnesota |
| 1979 | 41 | Virginia Tech |
| Year | Teams | Winning team |
|---|---|---|
| 1980 | 36 | Virginia Tech |
| 1981 | 38 | Minnesota |
| 1982 | 34 | Michigan State |
| 1983 | 35 | Cal Poly |
| 1984 | 36 | Virginia Tech |
| 1985 | 32 | UW-Madison |
| 1986 | 33 | Ohio State |
| 1987 | 29 | Cornell (NY) |
| 1988 | 26 | UW-Madison |
| 1989 | 27 | UW-Madison |
| Year | Teams | Winning team |
|---|---|---|
| 1990 | 27 | Cornell (NY) |
| 1991 | 27 | Illinois |
| 1992 | 26 | UW-Madison |
| 1993 | 30 | UW-Platteville |
| 1994 | 25 | Cornell (NY) |
| 1995 | 26 | UW-River Falls |
| 1996 | 27 | Cornell (NY) |
| 1997 | 25 | UW-Madison |
| 1998 | 22 | Cornell (NY) |
| 1999 | 25 | Illinois |
| Year | Teams | Winning team |
|---|---|---|
| 2000 | 22 | Cornell (NY) |
| 2001 | 23 | Cornell (NY) |
| 2002 | 26 | UW-Madison |
| 2003 | 24 | Cornell (NY) |
| 2004 | 24 | Cal Poly |
| 2005 | 23 | UW-Madison |
| 2006 | 21 | Virginia Tech |
| 2007 | 21 | Penn State |
| 2008 | 22 | Virginia Tech |
| 2009 | 19 | Virginia Tech |
| Year | Teams | Winning team |
|---|---|---|
| 2010 | 18 | UW-Madison |
| 2011 | 21 | Cornell (NY) |
| 2012 | 19 | Penn State |
| 2013 | 19 | Virginia Tech |
| 2014 | 21 | UW-Madison |
| 2015 | 21 | University of Minnesota |
| 2016 | 19 | University of Minnesota |
| 2017 | 17 | Penn State |
| 2018 | 19 | University of Wisconsin-River Falls |
| 2019 | 18 | Ohio State University |
| 2021 | 14 | Cornell University |
| 2022 | 14 | Virginia Tech |
| 2023 | 17 | University of Minnesota |
| 2023 | 16 | University of Minnesota |
