1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 3.75857 3.53917 3.53917 3.45417 3.16583 2.65417 2.47333 3.2325 3.83583 2.9675 2.7075 3.39333 3.20333 3.44333 4.02917 4.8025 3.68417 3.06857 Year $/bu