| 年月 | 单位：万吨 |
| 2004-12 | 364.49 |
| 2004-11 | 329.07 |
| 2004-10 | 293.19 |
| 2004-09 | 259.53 |
| 2004-08 | 227.07 |
| 2004-07 | 196.88 |
| 2004-06 | 170.69 |
| 2004-05 | 141.06 |
| 2004-04 | 116.33 |
| 2004-03 | 89.68 |
| 2004-02 | 55.57 |
| 2004-01 | 26.29 |
| 2003-12 | 356.23 |
| 2003-11 | 319.82 |
| 2003-10 | 285.63 |
| 2003-09 | 252.12 |
| 2003-08 | 220.67 |
| 2003-07 | 191.55 |
| 2003-06 | 165.30 |
| 2003-05 | 132.17 |
| 2003-04 | 104.07 |
| 2003-03 | 76.44 |
| 2003-02 | 46.65 |
| 2003-01 | 24.18 |
| 2002-12 | 287.94 |
| 2002-11 | 258.63 |
| 2002-10 | 229.64 |
| 2002-09 | 204.10 |
| 2002-08 | 175.44 |
| 2002-07 | 154.27 |
| 2002-06 | 134.12 |
| 2002-05 | 110.73 |
| 2002-04 | 87.53 |
| 2002-03 | 65.08 |
| 2002-02 | 39.93 |
| 2002-01 | 20.29 |
| 2001-12 | 262.76 |
| 2001-11 | 237.07 |
| 2001-10 | 212.21 |
| 2001-09 | 187.90 |
| 2001-08 | 164.89 |
| 2001-07 | 143.94 |
| 2001-06 | 126.79 |
| 2001-05 | 108.08 |
| 2001-04 | 88.02 |
| 2001-03 | 65.49 |
| 2001-02 | 40.15 |
| 2001-01 | 18.82 |
| 2000-12 | 260.90 |
| 2000-11 | 232.99 |
| 2000-10 | 208.91 |
| 2000-09 | 183.01 |
| 2000-08 | 160.05 |
| 2000-07 | 138.32 |
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