Year          Harvested        Yield          Production
               -acres-       -bu/acre-         -bushels-
1950            8,000          23.2             185,300
1960           22,400          20.3             454,600
1970           32,400          27.0             867,600
1980           48,400          18.6             898,000
1985           50,400          37.8           1,904,000
1990           41,500          30.0           1,244,000
1991           48,800          35.7           1,742,000
1992           48,100          39.9           1,920,000
1993           26,300          36.8             969,000
1994           50,400          33.8           1,701,000
1995           40,500          30.6           1,240,000
1996           47,500          42.6           2,022,000
1997           54,700          36.7           2,005,000
1998           58,700          36.5           2,140,000

Source: Missouri Agricultural Statistics Service