| 年月 | 单位：% |
| 2010-08 | 21.41 |
| 2010-07 | 19.08 |
| 2010-06 | 18.05 |
| 2010-05 | 30.17 |
| 2010-04 | 43.73 |
| 2010-03 | 28.65 |
| 2010-02 | 25.63 |
| 2010-01 | 41.61 |
| 2009-11 | 39.46 |
| 2009-09 | 35.19 |
| 2009-08 | 39.20 |
| 2009-07 | 31.64 |
| 2009-06 | 50.49 |
| 2009-05 | 33.52 |
| 2009-04 | 36.38 |
| 2009-03 | -7.15 |
| 2009-02 | 42.96 |
| 2009-01 | 12.00 |
| 2008-12 | 25.20 |
| 2008-11 | 7.60 |
| 2008-10 | 12.40 |
| 2008-09 | 16.60 |
| 2008-08 | 8.40 |
| 2008-07 | 15.90 |
| 2008-06 | 9.90 |
| 2008-05 | 9.10 |
| 2008-04 | 4.10 |
| 2008-03 | 15.00 |
| 2008-02 | 45.90 |
| 2008-01 | 17.35 |
| 2007-12 | 11.10 |
| 2007-11 | 17.30 |
| 2007-10 | 6.40 |
| 2007-09 | 7.60 |
| 2007-08 | 8.00 |
| 2007-07 | 4.50 |
| 2007-06 | 12.90 |
| 2007-05 | 12.70 |
| 2007-04 | 16.30 |
| 2007-03 | 20.30 |
| 2007-02 | 4.50 |
| 2007-01 | 23.44 |
| 2006-12 | 4.30 |
| 2006-11 | 5.30 |
| 2006-10 | 17.70 |
| 2006-09 | 26.80 |
| 2006-08 | 33.70 |
| 2006-07 | 33.10 |
| 2006-06 | 37.60 |
| 2006-05 | 26.80 |
| 2006-04 | 29.70 |
| 2006-03 | 27.50 |
| 2006-02 | 29.30 |
| 2005-12 | 41.00 |
| 2005-11 | 55.70 |
| 2005-10 | 55.50 |
| 2005-09 | 50.60 |
| 2005-08 | 48.00 |
| 2005-07 | 45.90 |
| 2005-06 | 48.50 |
| 2005-05 | 38.90 |
| 2005-04 | 44.80 |
| 2005-03 | 45.70 |
| 2005-02 | 44.90 |
| 2005-01 | 62.90 |
前瞻产业研究院 咨询·服务