| 序号 | 时间 (年) |
数据 (亿吨) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 20.64 |
| 8 | 2014 | 20.49 |
| 9 | 2013 | 22.06 |
| 10 | 2012 | 23.61 |
| 11 | 2011 | 24.63 |
| 12 | 2010 | 26.38 |
| 13 | 2009 | 26.74 |
| 14 | 2005 | 29.63 |
| 15 | 2000 | 20.19 |
| 16 | 1995 | 22.02 |
