| 序号 | 时间 (年) |
数据 (千克/公顷) |
|---|---|---|
| 1 | 2017 | |
| 2 | 2016 | |
| 3 | 2015 | |
| 4 | 2014 | |
| 5 | 2013 | |
| 6 | 2011 | |
| 7 | 2010 | 29157.24 |
| 8 | 2009 | 27446.55 |
| 9 | 2008 | 26163.46 |
| 10 | 2007 | 23656.86 |
| 11 | 2006 | 23487.96 |
| 12 | 2005 | 23469.88 |
| 13 | 2004 | 22410.19 |
| 14 | 2003 | 19952.47 |
| 15 | 2002 | 20707.34 |
| 16 | 2001 | 18232.27 |
| 17 | 2000 | 23348.13 |
| 18 | 1999 | 21992.71 |
