| Table 3. United States Corn Yield Estimates | |||||||||||||||||||||||||||||||||||
| 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | |
| bushels per acre | |||||||||||||||||||||||||||||||||||
| July 1 | 93.0 | 90.5 | 89.4 | 90.1 | 95.8 | 99.3 | 95.9 | … | … | … | … | … | … | 87.0 | |||||||||||||||||||||
| August 1 | 87.4 | 86.7 | 87.3 | 96.1 | 102.1 | 93.0 | 104.3 | 113.9 | 99.9 | 107.9 | 110.6 | 120.4 | 121.4 | 78.5 | 112.8 | 117.7 | 107.8 | 121.3 | 116.0 | 128.4 | 125.6 | 118.7 | 125.3 | 130.0 | 134.7 | 141.9 | 133.9 | 125.2 | 139.9 | 148.9 | 139.2 | 152.2 | 152.8 | 155.0 | 159.5 |
| September 1 | 85.1 | 82.8 | 89.7 | 100.3 | 104.6 | 91.8 | 107.1 | 113.9 | 85.1 | 106.3 | 113.3 | 119.7 | 119.9 | 78.5 | 112.4 | 121.7 | 106.1 | 121.4 | 113.1 | 129.0 | 121.1 | 120.2 | 125.2 | 132.0 | 132.2 | 141.8 | 133.5 | 125.4 | 138.5 | 149.4 | 143.2 | 154.7 | 155.8 | 152.3 | 161.9 |
| October 1 | 86.2 | 82.7 | 90.8 | 100.7 | 106.4 | 90.8 | 109.0 | 114.2 | 82.9 | 105.5 | 115.1 | 119.2 | 119.9 | 80.2 | 114.4 | 120.3 | 108.8 | 123.8 | 110.3 | 133.8 | 116.6 | 123.0 | 125.8 | 132.0 | 133.5 | 139.6 | 136.3 | 127.2 | 142.2 | 158.4 | 146.1 | 153.5 | 154.7 | 154.0 | 164.2 |
| November 1 | 87.2 | 85.5 | 91.5 | 101.2 | 109.2 | 90.8 | 109.2 | 114.2 | 80.5 | 105.9 | 116.6 | 119.3 | 120.3 | 82.3 | 116.6 | 119.0 | 108.6 | 129.3 | 103.1 | 138.4 | 113.7 | 126.5 | 126.4 | 133.3 | 134.5 | 137.7 | 138.0 | 127.6 | 143.2 | 160.2 | 148.4 | 151.2 | 153.0 | 153.8 | |
| January 1 | 86.2 | 87.4 | 90.8 | 101.2 | 109.4 | 91.0 | 109.9 | 114.8 | 81.6 | 106.6 | 118.0 | 119.3 | 119.4 | 84.6 | 116.2 | 118.5 | 108.6 | 131.4 | 100.7 | 138.6 | 113.5 | 127.1 | 127.0 | 134.4 | 133.8 | 137.1 | 138.2 | 130.0 | 142.2 | 160.4 | 147.9 | 149.1 | 151.1 | 153.9 | |
| FINAL | 86.4 | 88.0 | 90.8 | 101.0 | 109.5 | 91.0 | 108.9 | 113.2 | 81.1 | 106.7 | 118.0 | 119.3 | 119.8 | 84.6 | 116.3 | 118.5 | 108.6 | 131.5 | 100.7 | 138.6 | 113.5 | 127.1 | 126.7 | 134.4 | 133.8 | 136.9 | 138.2 | 129.3 | 142.2 | 160.7 | 148.0 | 149.1 | 150.7 | ||