| 年月 | 单位：万辆 |
| 2009-05 | 16.10 |
| 2009-04 | 16.10 |
| 2009-03 | 16.90 |
| 2009-02 | 12.70 |
| 2009-01 | 11.80 |
| 2008-12 | 19.04 |
| 2008-11 | 18.71 |
| 2008-10 | 17.84 |
| 2008-09 | 19.34 |
| 2008-08 | 15.64 |
| 2008-07 | 19.98 |
| 2008-06 | 20.95 |
| 2008-05 | 21.17 |
| 2008-04 | 22.96 |
| 2008-03 | 25.35 |
| 2008-02 | 16.30 |
| 2008-01 | 21.54 |
| 2007-12 | 21.54 |
| 2007-11 | 22.85 |
| 2007-10 | 17.86 |
| 2007-09 | 18.52 |
| 2007-08 | 18.05 |
| 2007-07 | 19.77 |
| 2007-06 | 19.09 |
| 2007-05 | 17.36 |
| 2007-04 | 18.02 |
| 2007-03 | 19.53 |
| 2007-02 | 13.18 |
| 2007-01 | 18.33 |
| 2006-12 | 14.69 |
| 2006-11 | 17.40 |
| 2006-10 | 14.83 |
| 2006-09 | 16.02 |
| 2006-08 | 13.21 |
| 2006-07 | 14.60 |
| 2006-06 | 16.72 |
| 2006-05 | 13.64 |
| 2006-04 | 15.85 |
| 2006-03 | 16.17 |
| 2006-02 | 11.56 |
| 2006-01 | 11.90 |
| 2005-12 | 12.35 |
| 2005-11 | 10.64 |
| 2005-10 | 9.82 |
| 2005-09 | 11.05 |
| 2005-08 | 9.84 |
| 2005-07 | 11.21 |
| 2005-06 | 10.40 |
| 2005-05 | 8.16 |
| 2005-04 | 9.97 |
| 2005-03 | 9.23 |
| 2005-02 | 5.30 |
| 2005-01 | 7.31 |
| 2004-12 | 6.54 |
| 2004-11 | 7.40 |
| 2004-10 | 5.50 |
| 2004-09 | 7.53 |
| 2004-08 | 7.81 |
| 2004-07 | 8.92 |
| 2004-06 | 9.97 |
| 2004-05 | 10.21 |
| 2004-04 | 10.81 |
| 2004-03 | 10.85 |
| 2004-02 | 6.71 |
| 2004-01 | 4.56 |
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