2008 - Utah
2007 - Utah
2006 - Utah
2005 - Texas
2004 - Texas
2003 - Utah
2002 - Texas
2001 - Utah
2000 - Utah
1999 - Texas
1998 - Texas
1997 - Oklahoma
1996 - Utah
1995 - Louisiana
1994 - Texas
1993 - Texas
1992 - Texas
1991 - Texas
1990 - Louisiana
1989 - Texas
1988 - Texas
1987 - Arizona
1986 - Texas
1985 - Texas
1984 - Florida
1983 - Texas
1982 - Texas
1981 - Oklahoma
1980 - Oklahoma
1979 - Oklahoma
1978 - Oklahoma
1977 - Texas
1976 - Texas
1975 - Arizona
1974 - Arizona
1973 - Arizona
1972 - Colorado
1971 - Wyoming
1970 - Oklahoma
1969 - Texas
1968 - South Dakota
1967 - Texas
1966 - Texas
1965 - Texas
1964 - Texas
1963 - Texas
1962 - Montana
1961 - Montana
1960 - Montana
1959 - New Mexico
1958 - Texas
1957 - New Mexico
1956 - Louisiana
1955 - Oklahoma
1954 - Texas
1953 - Unknown
1952 - Montana
1951 - Texas
1950 - New Mexico
1949 - Texas