The following table was obtained from information provided by the United States Census Bureau:
-----[1997]-------[1992]-------[1987]----------------------------------------

828 942 1063 Farms (number)
368076 377512 384277 Land in farms (acres)
445 401 362 Land in farms - avg size-farm(acres)
269 (N) (N) Land in farms - median size of farm (acres)
77 67 91 Farms by size: 1 to 9 acres
84 100 105 Farms by size: 10 to 49 acres
150 168 234 Farms by size: 50 to 179 acres
264 335 367 Farms by size: 180 to 499 acres
164 199 208 Farms by size: 500 to 999 acres
89 73 58 Farms by size: 1,000 acres or more
785 891 1010 Total cropland (farms)
355207 362650 365446 Total cropland (acres)
767 879 991 Total cropland, harvested cropland (farms)
350465 344473 291617 Total cropland, harvested cropland (acres)
144 167 229 Livestock and poultry:Cattle/calves
inv.(farms)
27072 34702 42943 Livestock and poultry:Cattle/calves
inv.(number)
45 51 72 Beef cows (farms)
899 1076 2930 Beef cows (number)
15 21 27 Milk cows (farms)
1021 1232 1481 Milk cows (number)
136 176 222 Cattle and calves sold (farms)
37982 51353 71827 Cattle and calves sold (number)
117 188 192 Hogs and pigs inventory (farms)
154403 178469 117204 Hogs and pigs inventory (number)
124 202 212 Hogs and pigs sold (farms)
319878 300683 205199 Hogs and pigs sold (number)
34 42 66 Sheep and lambs inventory (farms)
1971 1674 7567 Sheep and lambs inventory (number)
661 785 888 Corn for grain or seed (farms)
201709 211712 172456 Corn for grain or seed (acres)
28766218 28270633 24203559 Corn for grain or seed (bushels)
59 93 105 Corn for silage or green chop (farms)
3208 4968 4955 Corn for silage or green chop (acres)
48970 84997 85139 Corn for silage or green chop (tons,
green)
87 14 137 Wheat for grain (farms)
2523 578 3153 Wheat for grain (acres)
164644 29118 204702 Wheat for grain (bushels)
641 735 782 Soybeans for beans (farms)
136174 113384 96063 Soybeans for beans (acres)
6469025 4927795 4538486 Soybeans for beans (bushels)
168 250 246 Hay-alfalfa, (farms)
4340 6376 5736 Hay-alfalfa, (acres)
11359 21332 20542 Hay-alfalfa, (tons, dry)
60 128 131 Vegetables harvested for sale (farms)
3640 8316 8981 Vegetables harvested for sale (acres)