| 年月 | 单位：亿元 |
| 2010-04 | 1.00 |
| 2010-03 | 0.99 |
| 2010-02 | 0.87 |
| 2010-01 | 44.09 |
| 2009-12 | 0.99 |
| 2009-11 | 0.85 |
| 2009-10 | 1.04 |
| 2009-09 | 1.02 |
| 2009-08 | 1.01 |
| 2009-07 | 0.98 |
| 2009-06 | 0.98 |
| 2009-05 | 0.98 |
| 2009-04 | 0.98 |
| 2009-03 | 1.00 |
| 2009-02 | 1.00 |
| 2009-01 | 0.92 |
| 2008-12 | 1.02 |
| 2008-11 | 0.91 |
| 2008-10 | 0.87 |
| 2008-09 | 0.93 |
| 2008-08 | 0.88 |
| 2008-07 | 0.88 |
| 2008-06 | 0.83 |
| 2008-05 | 0.86 |
| 2008-04 | 0.83 |
| 2008-03 | 0.85 |
| 2008-02 | 0.76 |
| 2008-01 | 0.79 |
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