| 年月 | 单位：万吨 |
| 2008-12 | 163.20 |
| 2008-11 | 152.27 |
| 2008-10 | 132.02 |
| 2008-09 | 122.36 |
| 2008-08 | 109.22 |
| 2008-07 | 94.81 |
| 2008-06 | 81.33 |
| 2008-05 | 66.73 |
| 2008-04 | 53.09 |
| 2008-03 | 38.87 |
| 2008-02 | 24.66 |
| 2008-01 | 13.42 |
| 2007-12 | 138.93 |
| 2007-11 | 127.11 |
| 2007-10 | 115.49 |
| 2007-09 | 103.77 |
| 2007-08 | 91.93 |
| 2007-07 | 80.34 |
| 2007-06 | 69.34 |
| 2007-05 | 57.44 |
| 2007-04 | 45.72 |
| 2007-03 | 33.63 |
| 2007-02 | 21.09 |
| 2007-01 | 11.29 |
| 2006-12 | 130.28 |
| 2006-11 | 118.93 |
| 2006-10 | 107.11 |
| 2006-09 | 96.29 |
| 2006-08 | 85.37 |
| 2006-07 | 74.38 |
| 2006-06 | 62.62 |
| 2006-05 | 51.59 |
| 2006-04 | 40.01 |
| 2006-03 | 29.36 |
| 2006-02 | 16.06 |
| 2005-12 | 98.43 |
| 2005-11 | 89.39 |
| 2005-10 | 81.53 |
| 2005-09 | 72.56 |
| 2005-08 | 64.31 |
| 2005-07 | 55.79 |
| 2005-06 | 47.84 |
| 2005-05 | 39.96 |
| 2005-04 | 31.78 |
| 2005-03 | 23.79 |
| 2005-02 | 15.50 |
| 2005-01 | 8.72 |
| 2004-12 | 86.04 |
| 2004-11 | 78.61 |
| 2004-10 | 71.33 |
| 2004-09 | 64.98 |
| 2004-08 | 58.11 |
| 2004-07 | 51.22 |
| 2004-06 | 43.80 |
| 2004-05 | 36.66 |
| 2004-04 | 29.40 |
| 2004-03 | 21.81 |
| 2004-02 | 13.92 |
| 2004-01 | 7.03 |
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