Year          Harvested        Yield          Production
               -acres-       -bu/acre-         -bushels-
1950        18,400            22.4            412,800
1960        32,500            21.4            696,100
1970        30,000            28.0            840,000
1980        70,400            32.7          2,302,000
1985        72,600            36.2          2,629,000
1990        48,900            31.7          1,549,000
1991        55,500            32.2          1,787,000
1992        54,400            37.4          2,032,000
1993        43,000            39.4          1,693,000
1994        59,400            33.2          1,975,000
1995        61,200            34.0          2,083,000
1996        62,200            35.4          2,203,000
1997        69,200            38.1          2,637,000
1998        70,400            38.6          2,719,000

Source: Missouri Agricultural Statistics Service