单位:千公顷
时间范围:1987 - 2025
数据来源:美国农业部
| 序号 | 时间(年) | 数据(千公顷) |
|---|---|---|
| 1 | 2025 | |
| 2 | 2024 | |
| 3 | 2023 | |
| 4 | 2022 | |
| 5 | 2021 | |
| 6 | 2020 | 160.00 |
| 7 | 2019 | 180.00 |
| 8 | 2018 | 180.00 |
| 9 | 2017 | 185.00 |
| 10 | 2016 | 165.00 |
| 11 | 2015 | 150.00 |
| 12 | 2014 | 175.00 |
| 13 | 2013 | 190.00 |
| 14 | 2012 | 200.00 |
| 15 | 2011 | 204.00 |
| 16 | 2010 | 162.00 |
| 17 | 2009 | 170.00 |
| 18 | 2008 | 230.00 |
| 19 | 2007 | 250.00 |
| 20 | 2006 | 255.00 |
| 21 | 2005 | 255.00 |
| 22 | 2004 | 290.00 |
| 23 | 2003 | 285.00 |
| 24 | 2002 | 265.00 |
| 25 | 2001 | 245.00 |
| 26 | 2000 | 239.00 |
| 27 | 1999 | 248.00 |
| 28 | 1998 | 240.00 |
| 29 | 1997 | 214.00 |
| 30 | 1996 | 235.00 |
| 31 | 1995 | 270.00 |
| 32 | 1994 | 280.00 |
| 33 | 1993 | 275.00 |
| 34 | 1992 | 286.00 |
| 35 | 1991 | 298.00 |
| 36 | 1990 | 304.00 |
| 37 | 1989 | 309.00 |
| 38 | 1988 | 319.00 |
| 39 | 1987 | 324.00 |
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