| 年月 | 单位：万辆 |
| 2009-05 | 0.70 |
| 2009-04 | 0.60 |
| 2009-03 | 0.50 |
| 2009-02 | 0.30 |
| 2009-01 | 0.60 |
| 2008-12 | 0.57 |
| 2008-11 | 0.83 |
| 2008-10 | 0.35 |
| 2008-09 | 0.53 |
| 2008-08 | 0.57 |
| 2008-07 | 1.03 |
| 2008-06 | 1.11 |
| 2008-05 | 0.65 |
| 2008-04 | 0.51 |
| 2008-03 | 0.66 |
| 2008-02 | 0.31 |
| 2008-01 | 0.52 |
| 2007-12 | 1.13 |
| 2007-11 | 0.68 |
| 2007-10 | 0.60 |
| 2007-09 | 0.72 |
| 2007-08 | 0.61 |
| 2007-07 | 0.60 |
| 2007-06 | 0.77 |
| 2007-05 | 0.62 |
| 2007-04 | 0.78 |
| 2007-03 | 0.60 |
| 2007-02 | 0.25 |
| 2007-01 | 0.56 |
| 2006-12 | 0.57 |
| 2006-11 | 0.41 |
| 2006-10 | 0.44 |
| 2006-09 | 0.65 |
| 2006-08 | 0.64 |
| 2006-07 | 0.52 |
| 2006-06 | 0.58 |
| 2006-05 | 0.43 |
| 2006-04 | 0.53 |
| 2006-03 | 0.43 |
| 2006-02 | 0.18 |
| 2006-01 | 0.28 |
| 2005-12 | 0.59 |
| 2005-11 | 0.38 |
| 2005-10 | 0.21 |
| 2005-09 | 0.45 |
| 2005-08 | 0.43 |
| 2005-07 | 0.32 |
| 2005-06 | 0.27 |
| 2005-05 | 0.31 |
| 2005-04 | 0.31 |
| 2005-03 | 0.30 |
| 2005-02 | 0.21 |
| 2005-01 | 0.35 |
| 2004-12 | 0.60 |
| 2004-11 | 0.54 |
| 2004-10 | 0.51 |
| 2004-09 | 0.55 |
| 2004-08 | 0.62 |
| 2004-07 | 0.50 |
| 2004-06 | 0.45 |
| 2004-05 | 0.51 |
| 2004-04 | 0.56 |
| 2004-03 | 0.46 |
| 2004-02 | 0.34 |
| 2004-01 | 0.22 |
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