| 序号 | 时间 (年) |
数据 (万吨) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 18.00 |
| 8 | 2014 | 18.00 |
| 9 | 2013 | 17.50 |
| 10 | 2012 | 16.86 |
| 11 | 2011 | 20.48 |
| 12 | 2010 | 21.52 |
| 13 | 2009 | 13.31 |
| 14 | 2008 | 14.84 |
| 15 | 2007 | 19.00 |
| 16 | 2006 | 9.42 |
| 17 | 2005 | 8.41 |
| 18 | 2004 | 8.28 |
| 19 | 2003 | 8.75 |
| 20 | 1998 | 7.85 |
| 21 | 1997 | 6.87 |
| 22 | 1996 | 7.28 |
| 23 | 1995 | 5.30 |
| 24 | 1994 | 4.76 |
| 25 | 1993 | 4.16 |
| 26 | 1992 | 3.65 |
| 27 | 1991 | 3.38 |
| 28 | 1990 | 3.62 |
