单位:吨/公顷
时间范围:1987 - 2025
数据来源:美国农业部
序号 | 时间(年) | 数据(吨/公顷) |
---|---|---|
1 | 2025 | |
2 | 2024 | |
3 | 2023 | |
4 | 2022 | |
5 | 2021 | |
6 | 2020 | 1.21 |
7 | 2019 | 1.14 |
8 | 2018 | 1.29 |
9 | 2017 | 1.28 |
10 | 2016 | 1.35 |
11 | 2015 | 1.38 |
12 | 2014 | 1.32 |
13 | 2013 | 1.30 |
14 | 2012 | 1.50 |
15 | 2011 | 2.00 |
16 | 2010 | 2.00 |
17 | 2009 | 1.67 |
18 | 2008 | 1.00 |
19 | 2007 | 2.00 |
20 | 2006 | 2.00 |
21 | 2005 | 2.00 |
22 | 2004 | 2.00 |
23 | 2003 | 2.00 |
24 | 2002 | 2.00 |
25 | 2001 | 2.00 |
26 | 2000 | 2.00 |
27 | 1999 | 2.50 |
28 | 1998 | 2.50 |
29 | 1997 | 2.50 |
30 | 1996 | 3.00 |
31 | 1995 | 3.10 |
32 | 1994 | 3.52 |
33 | 1993 | 3.40 |
34 | 1992 | 3.72 |
35 | 1991 | 2.53 |
36 | 1990 | 3.21 |
37 | 1989 | 3.26 |
38 | 1988 | 3.31 |
39 | 1987 | 2.11 |
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