| 年月 | 单位：万辆 |
| 2009-05 | 0.80 |
| 2009-04 | 0.90 |
| 2009-03 | 0.80 |
| 2009-02 | 0.20 |
| 2009-01 | 0.10 |
| 2008-12 | 0.23 |
| 2008-11 | 0.27 |
| 2008-10 | 0.56 |
| 2008-09 | 0.30 |
| 2008-08 | 0.46 |
| 2008-07 | 0.43 |
| 2008-06 | 0.44 |
| 2008-05 | 0.34 |
| 2008-04 | 0.52 |
| 2008-03 | 0.46 |
| 2008-02 | 0.21 |
| 2008-01 | 0.34 |
| 2007-12 | 0.81 |
| 2007-11 | 0.85 |
| 2007-10 | 0.58 |
| 2007-09 | 0.98 |
| 2007-08 | 1.06 |
| 2007-07 | 0.99 |
| 2007-06 | 1.03 |
| 2007-05 | 0.97 |
| 2007-04 | 0.72 |
| 2007-03 | 0.89 |
| 2007-02 | 0.55 |
| 2007-01 | 0.79 |
| 2006-12 | 0.76 |
| 2006-11 | 0.72 |
| 2006-10 | 0.55 |
| 2006-09 | 0.58 |
| 2006-08 | 0.66 |
| 2006-07 | 0.86 |
| 2006-06 | 0.82 |
| 2006-05 | 0.81 |
| 2006-04 | 0.85 |
| 2006-03 | 0.92 |
| 2006-02 | 1.72 |
| 2006-01 | 1.35 |
| 2005-12 | 1.26 |
| 2005-11 | 1.77 |
| 2005-10 | 1.32 |
| 2005-09 | 1.58 |
| 2005-08 | 1.45 |
| 2005-07 | 1.05 |
| 2005-06 | 1.65 |
| 2005-05 | 1.14 |
| 2005-04 | 1.16 |
| 2005-03 | 0.99 |
| 2005-02 | 0.69 |
| 2005-01 | 1.08 |
| 2004-12 | 0.73 |
| 2004-11 | 0.94 |
| 2004-10 | 0.73 |
| 2004-09 | 0.79 |
| 2004-08 | 0.79 |
| 2004-07 | 1.01 |
| 2004-06 | 1.03 |
| 2004-05 | 1.09 |
| 2004-04 | 1.24 |
| 2004-03 | 1.11 |
| 2004-02 | 0.37 |
| 2004-01 | 0.30 |
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