| 序号 | 时间 (年) |
数据 (万吨) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | |
| 8 | 2014 | |
| 9 | 2013 | |
| 10 | 2012 | |
| 11 | 2011 | 39.43 |
| 12 | 2010 | 39.84 |
| 13 | 2009 | 40.02 |
| 14 | 2008 | 48.23 |
| 15 | 2007 | 50.65 |
| 16 | 2006 | 45.86 |
| 17 | 2005 | 45.26 |
| 18 | 2004 | 44.65 |
| 19 | 2003 | 42.93 |
| 20 | 1998 | 17.86 |
| 21 | 1997 | 16.76 |
| 22 | 1996 | 16.19 |
| 23 | 1995 | 13.94 |
| 24 | 1994 | 14.92 |
| 25 | 1993 | 9.82 |
| 26 | 1992 | 7.01 |
| 27 | 1991 | 6.46 |
| 28 | 1990 | 17.78 |
