| 序号 | 时间 (年) |
数据 (万吨) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2009 | |
| 4 | 2006 | |
| 5 | 2005 | |
| 6 | 2004 | |
| 7 | 1997 | 0.02 |
| 8 | 1996 | 0.08 |
| 9 | 1995 | 0.70 |
| 10 | 1990 | 0.05 |
| 11 | 1989 | 0.04 |
| 12 | 1988 | 0.04 |
| 13 | 1987 | 2.08 |
| 14 | 1980 | 0.06 |
| 15 | 1979 | 0.40 |
| 16 | 1978 | 0.23 |
