Year          Harvested        Yield          Production
               -acres-       -bu/acre-         -bushels- 
1950           21,600          17.3             373,500  
1960           40,000          22.4             896,800  
1970           55,000          17.0             945,400
1980           66,300           6.9             459,000
1985           79,600          25.3           2,017,000 
1990           67,900          22.9           1,554,000 
1991           58,200          18.4           1,071,000
1992           55,700          31.5           1,757,000 
1993           52,900          25.2           1,334,000 
1994           65,100          33.1           2,152,000
1995           62,200          21.3           1,325,000 
1996           56,300          37.7           2,125,000
1997           64,800          34.1           2,210,000
1998           80,700          28.9           2,329,000

Source: Missouri Agricultural Statistics Service