| 序号 | 时间 (年) |
数据 (万吨) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 6.45 |
| 8 | 2014 | 7.51 |
| 9 | 2013 | 7.75 |
| 10 | 2012 | 8.75 |
| 11 | 2011 | 8.89 |
| 12 | 2010 | 8.06 |
| 13 | 2009 | 7.02 |
| 14 | 2008 | 6.87 |
| 15 | 2007 | 6.61 |
| 16 | 2006 | 6.25 |
| 17 | 2005 | 6.03 |
| 18 | 2004 | 6.10 |
| 19 | 2003 | 9.19 |
| 20 | 1998 | 1.88 |
| 21 | 1997 | 1.21 |
| 22 | 1996 | 0.86 |
| 23 | 1995 | 1.05 |
| 24 | 1994 | 1.07 |
| 25 | 1993 | 0.93 |
| 26 | 1992 | 0.73 |
| 27 | 1991 | 0.57 |
| 28 | 1990 | 0.47 |
