| 年月 | 单位：亿元 |
| 2010-12 | 15.05 |
| 2010-11 | 12.63 |
| 2010-10 | 13.71 |
| 2010-09 | 12.84 |
| 2010-08 | 11.02 |
| 2010-07 | 11.05 |
| 2010-06 | 10.50 |
| 2010-05 | 12.38 |
| 2010-04 | 10.39 |
| 2010-03 | 10.79 |
| 2010-02 | 13.70 |
| 2009-12 | 12.71 |
| 2009-11 | 11.00 |
| 2009-10 | 11.77 |
| 2009-09 | 11.08 |
| 2009-08 | 9.49 |
| 2009-07 | 9.75 |
| 2009-06 | 9.27 |
| 2009-05 | 10.59 |
| 2009-04 | 8.70 |
| 2009-03 | 9.20 |
| 2009-02 | 10.72 |
| 2008-12 | 10.65 |
| 2008-11 | 9.17 |
| 2008-10 | 9.82 |
| 2008-09 | 9.31 |
| 2008-08 | 7.90 |
| 2008-07 | 8.06 |
| 2008-06 | 7.78 |
| 2008-05 | 8.99 |
| 2008-04 | 7.44 |
| 2008-03 | 7.74 |
| 2008-02 | 9.74 |
| 2007-12 | 8.89 |
| 2007-10 | 7.99 |
| 2007-09 | 7.21 |
| 2007-07 | 6.47 |
| 2007-06 | 6.29 |
| 2007-05 | 7.32 |
| 2007-04 | 6.21 |
| 2007-03 | 6.31 |
| 2007-02 | 8.31 |
| 2006-12 | 7.37 |
| 2006-11 | 6.01 |
| 2006-08 | 5.39 |
| 2006-07 | 5.60 |
| 2006-06 | 5.56 |
| 2006-05 | 6.15 |
| 2006-04 | 5.36 |
| 2006-03 | 5.52 |
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