| 年月 | 单位：万吨 |
| 2010-12 | 59.10 |
| 2010-11 | 53.40 |
| 2010-10 | 47.99 |
| 2010-09 | 42.60 |
| 2010-08 | 37.10 |
| 2010-07 | 33.00 |
| 2010-06 | 28.00 |
| 2010-05 | 22.27 |
| 2010-04 | 17.10 |
| 2010-03 | 12.20 |
| 2010-02 | 8.04 |
| 2010-01 | 4.51 |
| 2009-12 | 51.47 |
| 2009-11 | 46.44 |
| 2009-10 | 41.47 |
| 2009-09 | 37.00 |
| 2009-08 | 32.47 |
| 2009-07 | 28.02 |
| 2009-06 | 23.20 |
| 2009-05 | 18.08 |
| 2009-04 | 13.93 |
| 2009-03 | 9.10 |
| 2009-02 | 6.14 |
| 2009-01 | 2.86 |
| 2008-12 | 43.39 |
| 2008-11 | 45.07 |
| 2008-10 | 36.06 |
| 2008-09 | 32.65 |
| 2008-08 | 29.14 |
| 2008-07 | 25.79 |
| 2008-06 | 21.81 |
| 2008-05 | 17.65 |
| 2008-04 | 13.55 |
| 2008-03 | 9.60 |
| 2008-02 | 5.92 |
| 2008-01 | 3.35 |
| 2007-12 | 39.82 |
| 2007-11 | 35.92 |
| 2007-10 | 32.17 |
| 2007-09 | 28.65 |
| 2007-08 | 24.93 |
| 2007-07 | 21.35 |
| 2007-06 | 17.63 |
| 2007-05 | 14.26 |
| 2007-04 | 11.43 |
| 2007-03 | 8.23 |
| 2007-02 | 5.24 |
| 2007-01 | 2.99 |
| 2006-12 | 34.79 |
| 2006-11 | 31.24 |
| 2006-10 | 28.08 |
| 2006-09 | 25.47 |
| 2006-08 | 21.87 |
| 2006-07 | 18.84 |
| 2006-06 | 16.11 |
| 2006-05 | 13.07 |
| 2006-04 | 10.35 |
| 2006-03 | 7.59 |
| 2006-02 | 4.83 |
| 2006-01 | 2.58 |
| 2005-12 | 30.23 |
| 2005-11 | 26.48 |
| 2005-10 | 23.80 |
| 2005-09 | 21.25 |
| 2005-08 | 18.26 |
| 2005-07 | 15.94 |
| 2005-06 | 13.18 |
| 2005-05 | 10.98 |
| 2005-04 | 8.95 |
| 2005-03 | 6.94 |
| 2005-02 | 4.50 |
| 2005-01 | 2.05 |
| 2004-12 | 23.78 |
| 2004-11 | 21.68 |
| 2004-10 | 19.74 |
| 2004-09 | 17.86 |
| 2004-08 | 15.64 |
| 2004-07 | 13.41 |
| 2004-06 | 11.42 |
| 2004-05 | 9.38 |
| 2004-04 | 7.57 |
| 2004-03 | 5.84 |
| 2004-02 | 3.98 |
| 2004-01 | 1.80 |
| 2003-12 | 20.39 |
| 2003-11 | 18.49 |
| 2003-10 | 16.64 |
| 2003-09 | 15.06 |
| 2003-08 | 13.22 |
| 2003-07 | 11.84 |
| 2003-06 | 10.41 |
| 2003-05 | 8.79 |
| 2003-04 | 7.24 |
| 2003-03 | 5.72 |
| 2003-02 | 2.74 |
| 2003-01 | 1.32 |
| 2002-12 | 17.09 |
| 2002-11 | 15.48 |
| 2002-10 | 13.98 |
| 2002-09 | 12.50 |
| 2002-08 | 10.89 |
| 2002-07 | 9.44 |
| 2002-06 | 8.09 |
| 2002-05 | 6.63 |
| 2002-04 | 5.27 |
| 2002-03 | 3.45 |
| 2002-02 | 2.18 |
| 2002-01 | 1.11 |
| 2001-12 | 13.83 |
| 2001-11 | 12.69 |
| 2001-10 | 11.44 |
| 2001-09 | 10.26 |
| 2001-08 | 8.96 |
| 2001-07 | 7.89 |
| 2001-06 | 6.78 |
| 2001-05 | 5.55 |
| 2001-04 | 4.47 |
| 2001-03 | 3.34 |
| 2001-02 | 2.16 |
| 2001-01 | 0.89 |
| 2000-12 | 13.90 |
| 2000-11 | 12.43 |
| 2000-10 | 11.19 |
| 2000-09 | 10.01 |
| 2000-08 | 8.72 |
| 2000-07 | 7.46 |
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