Year	State	Planted	Harvested	Yield per harvested acre	Production	Price per unit	Value of production	Value per harvested acre
		1000 acres	1000 acres	bushels	1000 bushels	dols / bu	1000 dollars
1971	IA	1	1	18	18	2.41	no data	no data
1970	IA	1	1	18	18	2.51	no data	no data
1969	IA	1	1	19	19	2.75	no data	no data
1968	IA	2	2	19	38	2.84	no data	no data
1967	IA	2	2	20	40	2.95	no data	no data
1966	IA	3	3	19	57	2.94	no data	no data
1965	IA	10	10	20	200	2.8	no data	no data
1964	IA	4	4	18	72	2.78	no data	no data
1963	IA	11	10	15.5	155	2.78	no data	no data
1962	IA	10	10	17	170	2.92	no data	no data
1961	IA	10	10	18	180	3.37	no data	no data
1960	IA	16	16	17	272	2.76	no data	no data
1959	IA	12	12	17.5	210	3	no data	no data
1958	IA	14	14	18.5	259	2.79	no data	no data
1957	IA	14	14	14	196	2.97	no data	no data
1956	IA	29	25	8	200	3.01	no data	no data
1955	IA	14	14	15	210	2.92	no data	no data
1954	IA	28	27	10.5	284	3.09	no data	no data
1953	IA	25	25	9.5	238	3.65	3.65	869
1952	IA	34	34	14	476	3.77	3.77	1,795
1951	IA	61	60	9.5	570	3.61	3.61	2,058
1950	IA	78	77	15.5	1194	3.46	3.46	4,131
1949	IA	111	110	13.8	1518	3.6	3.6	5,465
1948	IA	105	104	15.5	1612		5.68	9,156
1947	IA	84	83	13.5	1120		5.9	6,608
1946	IA	34	34	15	510		3.74	1,907
1945	IA	76	75	12.5	938		2.87	2,692
1944	IA	111	93	5.9	549		2.88	1,581
1943	IA	330	325	12	3900		2.81	10,959
1942	IA	262	256	12.5	3200		2.29	7,328
1941	IA	308	305	13	3965		1.77	7,018
1940	IA	208	197	13	2561		1.37	3,509
1939	IA	104	102	10.2	1040		1.37	1,425
1938	IA	11	11	13.3	146		1.5	219
1937	IA	8	8	11.5	92		1.83	168
1936	IA	15	10	8	80		1.83	146
1935	IA	21	21	8	168		1.4	235
1934	IA	26	16	6	96		1.72	165
1933	IA	35	28	6.5	182		1.62	295
1932	IA	20	19	9	171		0.83	142
1931	IA	25	23	8	184		1.2	221
1930	IA	20	20	11.5	230		1.73	398
1929	IA	13	13	9	117		2.56	300
1928	IA	19	19	10	190		1.9	361
1927	IA	19	19	10.5	200		1.99	398
1926	IA	15	15	11	165		2.05	338
1925	IA	10	10	10.5	105		2.22	233
1924	IA	8	8	9.9	79		2.05	162
1923	IA	7	7	9	63		2.1	132
1922	IA	8	8	9.5	76		2.03	154
1921	IA	8	8	8.5	68		1.68	114
1920	IA	11	11	9.5	104		2.52	262
1919	IA	no data	12	7.5	90		4.29	386
1918	IA	no data	13	8.5	110		3.45	380
1917	IA	no data	10	10	100		2.94	294
1916	IA	no data	9	8.5	76		2.01	153
1915	IA	no data	14	9.5	133		1.42	189
1914	IA	no data	16	11	176		1.31	231
1913	IA	no data	22	10	220		1.16	255
1912	IA	no data	37	11.5	426		1.49	635
1911	IA	no data	39	8	312		2.02	630
1910	IA	no data	20	8.5	170		2.22	377
1909	IA	no data	16	9.1	146		1.23	180
1908	IA	no data	41	10.5	430		1.09	469
1907	IA	no data	43	10	430		0.97	417
1906	IA	no data	19	10	190		0.95	180
1905	IA	no data	18	9.5	171		0.86	147
1904	IA	no data	25	10.5	262		0.98	257
1903	IA	no data	41	8.5	348		0.86	299
1902	IA	no data	95	8	760		1.05	798
1901	IA	no data	104	13	1352		no data	no data
1900	IA	no data	109	11.5	1254		no data	no data
1899	IA	no data	130	11.2	1456		no data	no data
1898	IA	no data	220	10.5	2310		no data	no data
1897	IA	no data	240	10	2400		no data	no data
1896	IA	no data	195	9.5	1852		no data	no data
1895	IA	no data	210	11	2310		no data	no data
1894	IA	no data	210	8	1680		no data	no data
1893	IA	no data	250	9	2250		no data	no data
1892	IA	no data	230	10	2300		no data	no data
1891	IA	no data	295	10.5	3098		no data	no data
1890	IA	no data	280	10.5	2940		no data	no data
1889	IA	no data	245	10	2450		no data	no data