| 序号 | 时间 (年) |
数据 (万吨) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 33.58 |
| 8 | 2014 | 33.11 |
| 9 | 2013 | 32.44 |
| 10 | 2012 | 32.32 |
| 11 | 2011 | 31.92 |
| 12 | 2010 | 31.56 |
| 13 | 2009 | 31.32 |
| 14 | 2008 | 30.56 |
| 15 | 2007 | 30.12 |
| 16 | 2005 | 29.84 |
| 17 | 2004 | 29.30 |
| 18 | 2003 | 28.74 |
| 19 | 2002 | 27.82 |
| 20 | 2001 | 26.18 |
| 21 | 2000 | 27.07 |
| 22 | 1999 | 26.29 |
| 23 | 1998 | 23.50 |
| 24 | 1997 | 22.49 |
| 25 | 1995 | 18.15 |
| 26 | 1990 | 7.91 |
| 27 | 1985 | 3.55 |
| 28 | 1984 | 0.00 |
