| 年月 | 单位:亿元 |
| 2009-12 | 34.10 |
| 2009-11 | 27.07 |
| 2009-10 | 27.29 |
| 2009-09 | 25.90 |
| 2009-08 | 24.70 |
| 2009-07 | 24.80 |
| 2009-06 | 25.00 |
| 2009-05 | 25.10 |
| 2009-04 | 23.50 |
| 2009-03 | 21.60 |
| 2009-02 | 20.40 |
| 2009-01 | 18.70 |
| 2008-12 | 23.10 |
| 2008-11 | 19.00 |
| 2008-10 | 18.40 |
| 2008-09 | 19.60 |
| 2008-08 | 25.40 |
| 2008-07 | 20.20 |
| 2008-06 | 19.90 |
| 2008-05 | 22.10 |
| 2008-04 | 20.50 |
| 2008-03 | 20.70 |
| 2008-02 | 18.40 |
| 2008-01 | 20.50 |
| 2007-12 | 25.00 |
| 2007-11 | 19.20 |
| 2007-10 | 17.90 |
| 2007-09 | 18.00 |
| 2007-08 | 17.20 |
| 2007-07 | 16.70 |
| 2007-06 | 20.50 |
| 2007-05 | 19.80 |
| 2007-04 | 18.90 |
| 2007-03 | 19.10 |
| 2007-02 | 15.60 |
| 2007-01 | 19.10 |
| 2006-12 | 23.70 |
| 2006-11 | 15.50 |
| 2006-10 | 15.10 |
| 2006-09 | 14.20 |
| 2006-08 | 14.40 |
| 2006-07 | 13.70 |
| 2006-06 | 13.20 |
| 2006-05 | 13.40 |
| 2006-04 | 12.70 |
| 2006-03 | 15.10 |
| 2006-02 | 14.10 |
| 2006-01 | 15.60 |
| 2005-12 | 15.80 |
| 2005-11 | 14.30 |
| 2005-10 | 14.70 |
| 2005-09 | 14.50 |
| 2005-08 | 13.90 |
| 2005-07 | 13.20 |
| 2005-06 | 12.00 |
| 2005-05 | 11.60 |
| 2005-04 | 12.30 |
| 2005-03 | 14.60 |
| 2005-02 | 12.00 |
| 2005-01 | 12.40 |
| 2004-12 | 172.00 |
| 2004-11 | 157.10 |
| 2004-10 | 151.60 |
| 2004-09 | 160.60 |
| 2004-08 | 158.50 |
| 2004-07 | 165.30 |
| 2004-06 | 172.70 |
| 2004-05 | 172.30 |
| 2004-04 | 182.00 |
| 2004-03 | 169.70 |
| 2004-02 | 152.60 |
| 2004-01 | 152.50 |
| 2003-12 | 157.90 |
| 2003-11 | 137.80 |
| 2003-10 | 149.20 |
| 2003-09 | 155.90 |
| 2003-08 | 145.20 |
| 2003-07 | 149.20 |
| 2003-06 | 138.40 |
| 2003-05 | 124.00 |
| 2003-04 | 119.10 |
| 2003-03 | 112.70 |
| 2003-02 | 94.30 |
| 2003-01 | 102.40 |
| 2002-12 | 104.60 |
| 2002-11 | 99.50 |
| 2002-10 | 102.50 |
| 2002-09 | 105.30 |
| 2002-08 | 93.00 |
| 2002-07 | 83.30 |
| 2002-06 | 75.90 |
| 2002-05 | 80.60 |
| 2002-04 | 69.50 |
| 2002-03 | 58.90 |
| 2002-02 | 55.20 |
| 2002-01 | 51.40 |
| 2001-12 | 50.40 |
| 2001-11 | 47.10 |
| 2001-10 | 48.30 |
| 2001-09 | 50.50 |
| 2001-08 | 53.30 |
| 2001-07 | 49.40 |
| 2001-06 | 46.70 |
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