| 月份 | 同比增长 | 累计增长 |
| 2008-06 | 16.00% | 14.40% |
| 2008-05 | 16.00% | 15.20% |
| 2008-04 | 15.70% | 15.70% |
| 2008-03 | 17.80% | 16.10% |
| 2008-02 | 15.40% | 16.30% |
| 2007-12 | 17.40% | 16.30% |
| 2007-11 | 17.30% | 16.30% |
| 2007-10 | 17.90% | 16.40% |
| 2007-09 | 18.90% | 15.40% |
| 2007-08 | 17.50% | 18.50% |
| 2007-07 | 18.00% | 18.50% |
| 2007-06 | 19.40% | 18.50% |
| 2007-05 | 18.10% | 18.50% |
| 2007-04 | 17.40% | 18.40% |
| 2007-03 | 17.60% | 18.50% |
| 2007-02 | 12.60% | 18.50% |
| 2006-12 | 14.70% | 18.10% |
| 2006-11 | 14.90% | 18.00% |
| 2006-10 | 14.70% | 18.30% |
| 2006-09 | 16.10% | 18.50% |