| 年月 | 单位：万吨 |
| 2004-12 | 35.67 |
| 2004-11 | 34.87 |
| 2004-10 | 33.63 |
| 2004-09 | 31.39 |
| 2004-08 | 29.96 |
| 2004-07 | 28.45 |
| 2004-06 | 29.72 |
| 2004-05 | 26.16 |
| 2004-04 | 28.76 |
| 2004-03 | 33.53 |
| 2004-02 | 29.17 |
| 2004-01 | 26.29 |
| 2003-12 | 36.37 |
| 2003-11 | 34.00 |
| 2003-10 | 33.25 |
| 2003-09 | 31.42 |
| 2003-08 | 29.15 |
| 2003-07 | 25.62 |
| 2003-06 | 31.29 |
| 2003-05 | 27.84 |
| 2003-04 | 27.28 |
| 2003-03 | 27.66 |
| 2003-02 | 22.72 |
| 2003-01 | 24.18 |
| 2002-12 | 30.09 |
| 2002-11 | 29.01 |
| 2002-10 | 26.86 |
| 2002-09 | 28.68 |
| 2002-08 | 21.62 |
| 2002-07 | 19.90 |
| 2002-06 | 23.66 |
| 2002-05 | 20.45 |
| 2002-04 | 22.36 |
| 2002-03 | 24.31 |
| 2002-02 | 19.67 |
| 2002-01 | 20.29 |
| 2001-12 | 24.90 |
| 2001-11 | 24.46 |
| 2001-10 | 24.50 |
| 2001-09 | 23.03 |
| 2001-08 | 19.73 |
| 2001-07 | 17.25 |
| 2001-06 | 20.16 |
| 2001-05 | 19.28 |
| 2001-04 | 22.62 |
| 2001-03 | 24.97 |
| 2001-02 | 21.63 |
| 2001-01 | 18.82 |
| 2000-12 | 27.53 |
| 2000-11 | 24.58 |
| 2000-10 | 24.78 |
| 2000-09 | 23.13 |
| 2000-08 | 22.11 |
| 2000-07 | 20.12 |
前瞻产业研究院 咨询·服务