| 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 | 38378.52 |
| 8 | 2009 | 37651.73 |
| 9 | 2008 | 36973.77 |
| 10 | 2007 | 33883.00 |
| 11 | 2006 | 34463.97 |
| 12 | 2005 | 32902.31 |
| 13 | 2004 | 31799.67 |
| 14 | 2003 | 28987.86 |
| 15 | 2002 | 28487.15 |
| 16 | 2001 | 26496.04 |
| 17 | 2000 | 25683.11 |
| 18 | 1999 | 27906.77 |
