| 年份 | 玉米占谷物产量比重(%) |
|---|---|
| 1978 | - |
| 1979 | - |
| 1980 | - |
| 1981 | - |
| 1982 | - |
| 1983 | - |
| 1984 | - |
| 1985 | - |
| 1986 | - |
| 1987 | - |
| 1988 | - |
| 1989 | - |
| 1990 | - |
| 1991 | 24.96 |
| 1992 | 23.75 |
| 1993 | 25.35 |
| 1994 | 25.20 |
| 1995 | 26.91 |
| 1996 | 28.25 |
| 1997 | 23.52 |
| 1998 | 29.14 |
| 1999 | 28.27 |
| 2000 | 26.16 |
| 2001 | 28.77 |
| 2002 | 30.48 |
| 2003 | 30.95 |
| 2004 | 31.66 |
| 2005 | 32.58 |
| 2006 | 33.62 |
| 2007 | 33.75 |
| 2008 | 35.44 |
| 2009 | 35.18 |
| 2010 | 37.26 |
| 2011 | 39.09 |
| 2012 | 40.52 |
| 2013 | 42.36 |
| 2014 | 41.91 |
| 2015 | 42.87 |
| 2016 | 42.75 |
| 2017 | 42.11 |
| 2018 | 42.16 |
| 2019 | 42.49 |
| 2020 | 42.26 |
| 2021 | 43.07 |
| 2022 | 43.78 |
| 2023 | 45.03 |
| 2024 | 45.21 |