| 季度 | 单位：万吨 |
| 2011-12 | 购买后可见 » |
| 2011-06 | 购买后可见 » |
| 2010-12 | 购买后可见 » |
| 2010-06 | 购买后可见 » |
| 2009-12 | 购买后可见 » |
| 2008-12 | 购买后可见 » |
| 2008-06 | 购买后可见 » |
| 2007-12 | 购买后可见 » |
| 2007-06 | 购买后可见 » |
| 2006-12 | 购买后可见 » |
| 2005-06 | 购买后可见 » |
| 2002-12 | 购买后可见 » |
| 2002-06 | 购买后可见 » |
| 2001-12 | 购买后可见 » |
| 2001-06 | 购买后可见 » |
| 2000-12 | 购买后可见 » |
| 2000-06 | 58.14 |
| 1999-12 | 116.50 |
| 1999-06 | 54.24 |
| 1998-12 | 100.80 |
| 1998-06 | 50.65 |
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