| 年月 | 单位：万辆 |
| 2009-05 | 2.40 |
| 2009-04 | 1.80 |
| 2009-03 | 1.10 |
| 2009-02 | 0.90 |
| 2009-01 | 0.60 |
| 2008-12 | 7.74 |
| 2008-11 | 7.41 |
| 2008-10 | 6.61 |
| 2008-09 | 6.27 |
| 2008-08 | 5.72 |
| 2008-07 | 5.13 |
| 2008-06 | 4.09 |
| 2008-05 | 2.97 |
| 2008-04 | 2.34 |
| 2008-03 | 1.79 |
| 2008-02 | 0.83 |
| 2008-01 | 0.52 |
| 2007-12 | 8.02 |
| 2007-11 | 6.91 |
| 2007-10 | 6.22 |
| 2007-09 | 5.64 |
| 2007-08 | 4.72 |
| 2007-07 | 4.29 |
| 2007-06 | 3.66 |
| 2007-05 | 2.93 |
| 2007-04 | 2.33 |
| 2007-03 | 1.51 |
| 2007-02 | 0.83 |
| 2007-01 | 0.56 |
| 2006-12 | 5.87 |
| 2006-11 | 5.28 |
| 2006-10 | 5.01 |
| 2006-09 | 4.57 |
| 2006-08 | 3.92 |
| 2006-07 | 3.23 |
| 2006-06 | 2.72 |
| 2006-05 | 1.87 |
| 2006-04 | 1.45 |
| 2006-03 | 0.90 |
| 2006-02 | 0.48 |
| 2006-01 | 0.28 |
| 2005-12 | 4.20 |
| 2005-11 | 3.60 |
| 2005-10 | 3.21 |
| 2005-09 | 2.99 |
| 2005-08 | 2.53 |
| 2005-07 | 2.09 |
| 2005-06 | 1.77 |
| 2005-05 | 1.49 |
| 2005-04 | 1.16 |
| 2005-03 | 0.86 |
| 2005-02 | 0.54 |
| 2005-01 | 0.35 |
| 2004-12 | 6.14 |
| 2004-11 | 5.66 |
| 2004-10 | 5.11 |
| 2004-09 | 4.61 |
| 2004-08 | 4.06 |
| 2004-07 | 3.37 |
| 2004-06 | 2.87 |
| 2004-05 | 2.39 |
| 2004-04 | 1.73 |
| 2004-03 | 1.14 |
| 2004-02 | 0.65 |
| 2004-01 | 0.22 |
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