| 年月 | 单位：吨 |
| 2007-12 | 1901.00 |
| 2007-11 | 3890.00 |
| 2007-10 | 2697.00 |
| 2007-09 | 3656.00 |
| 2007-08 | 2226.00 |
| 2007-07 | 2468.00 |
| 2007-06 | 3112.00 |
| 2007-05 | 2081.00 |
| 2007-04 | 2195.00 |
| 2007-03 | 1588.00 |
| 2007-02 | 1056.00 |
| 2007-01 | 1736.00 |
| 2006-12 | 3744.00 |
| 2006-11 | 2148.00 |
| 2006-10 | 1817.00 |
| 2006-09 | 3504.00 |
| 2006-08 | 2862.00 |
| 2006-07 | 3159.00 |
| 2006-06 | 4748.00 |
| 2006-05 | 3406.00 |
| 2006-04 | 3335.00 |
| 2006-03 | 918.00 |
| 2006-02 | 1074.00 |
| 2006-01 | 2249.00 |
| 2005-12 | 3489.00 |
| 2005-11 | 3595.00 |
| 2005-10 | 4254.00 |
| 2005-09 | 2288.00 |
| 2005-08 | 4364.00 |
| 2005-07 | 3106.00 |
| 2005-06 | 5164.00 |
| 2005-05 | 3267.00 |
| 2005-04 | 4197.00 |
| 2005-03 | 2424.00 |
| 2005-02 | 868.00 |
| 2005-01 | 1532.00 |
| 2004-12 | 3183.00 |
| 2004-11 | 2867.00 |
| 2004-10 | 1670.00 |
| 2004-09 | 2805.00 |
| 2004-08 | 3540.00 |
| 2004-07 | 2234.00 |
| 2004-06 | 2641.00 |
| 2004-05 | 2164.00 |
| 2004-04 | 1109.00 |
| 2004-03 | 1738.00 |
| 2004-02 | 1790.00 |
| 2004-01 | 1028.00 |
| 2003-12 | 1952.00 |
| 2003-11 | 3233.00 |
| 2003-10 | 1976.00 |
| 2003-09 | 1403.00 |
| 2003-08 | 2842.00 |
| 2003-07 | 1189.00 |
| 2003-06 | 1822.00 |
| 2003-05 | 2363.00 |
| 2003-04 | 1649.00 |
| 2003-03 | 1542.00 |
| 2003-02 | 1266.00 |
| 2003-01 | 1195.00 |
| 2002-12 | 3057.00 |
| 2002-11 | 2396.00 |
| 2002-10 | 1220.00 |
| 2002-09 | 1395.00 |
| 2002-08 | 1807.00 |
| 2002-07 | 1864.00 |
| 2002-06 | 4839.00 |
| 2002-05 | 2386.00 |
| 2002-04 | 1932.00 |
| 2002-03 | 2329.00 |
| 2002-02 | 1580.00 |
| 2002-01 | 2400.00 |
| 2001-12 | 2466.00 |
| 2001-11 | 1476.00 |
| 2001-10 | 2131.00 |
| 2001-09 | 2233.00 |
| 2001-08 | 2022.00 |
| 2001-07 | 1648.00 |
| 2001-06 | 2473.00 |
| 2001-05 | 1975.00 |
| 2001-04 | 1608.00 |
| 2001-03 | 1153.00 |
| 2001-02 | 4564.00 |
| 2001-01 | 1041.00 |
| 2000-12 | 5312.00 |
| 2000-11 | 5635.00 |
| 2000-10 | 3732.00 |
| 2000-09 | 2781.00 |
| 2000-08 | 7276.00 |
| 2000-07 | 4536.00 |
| 2000-06 | 2679.00 |
| 2000-05 | 2012.00 |
| 2000-04 | 5045.00 |
| 2000-03 | 5698.00 |
| 2000-02 | 3161.00 |
| 2000-01 | 1313.00 |
| 1999-12 | 1656.00 |
| 1999-11 | 1527.00 |
| 1999-10 | 2066.00 |
| 1999-09 | 6634.00 |
| 1999-08 | 1546.00 |
| 1999-07 | 3062.00 |
| 1999-06 | 1920.00 |
| 1999-05 | 4172.00 |
| 1999-04 | 2027.00 |
| 1999-03 | 2737.00 |
| 1999-02 | 953.00 |
| 1999-01 | 7173.00 |
| 1998-12 | 5986.00 |
| 1998-11 | 5216.00 |
| 1998-10 | 8013.00 |
| 1998-09 | 1474.00 |
| 1998-08 | 3380.00 |
| 1998-07 | 3272.00 |
| 1998-06 | 4390.00 |
| 1998-05 | 7406.00 |
| 1998-04 | 4221.00 |
| 1998-03 | 5942.00 |
| 1998-02 | 1924.00 |
| 1998-01 | 5254.00 |
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