| 年月 | 单位：% |
| 2009-05 | 0.74 |
| 2009-04 | 0.73 |
| 2009-03 | 60.00 |
| 2009-02 | -52.50 |
| 2009-01 | -75.00 |
| 2008-12 | -55.10 |
| 2008-11 | -53.90 |
| 2008-10 | -52.30 |
| 2008-09 | -55.80 |
| 2008-08 | -54.50 |
| 2008-07 | -54.30 |
| 2008-06 | -54.40 |
| 2008-05 | -52.40 |
| 2008-04 | -48.00 |
| 2008-03 | -54.90 |
| 2008-02 | -59.00 |
| 2008-01 | -55.09 |
| 2007-12 | 29.90 |
| 2007-11 | 32.70 |
| 2007-10 | 34.20 |
| 2007-09 | 36.70 |
| 2007-08 | 32.80 |
| 2007-07 | 29.60 |
| 2007-06 | 35.10 |
| 2007-05 | 38.30 |
| 2007-04 | 29.30 |
| 2007-03 | 45.50 |
| 2007-02 | 57.60 |
| 2007-01 | 95.96 |
| 2006-12 | 0.40 |
| 2006-11 | 8.20 |
| 2006-10 | 8.50 |
| 2006-09 | 11.90 |
| 2006-08 | 14.70 |
| 2006-07 | 15.20 |
| 2006-06 | 10.50 |
| 2006-05 | 12.60 |
| 2006-04 | 18.10 |
| 2006-03 | 21.10 |
| 2006-02 | 31.80 |
| 2005-12 | 48.10 |
| 2005-11 | 65.80 |
| 2005-10 | 140.00 |
| 2005-09 | 117.50 |
| 2005-08 | 95.00 |
| 2005-07 | -14.80 |
| 2005-06 | 84.90 |
| 2005-05 | 69.60 |
| 2005-04 | 75.50 |
| 2005-03 | 80.50 |
| 2005-02 | 196.80 |
| 2005-01 | 217.60 |
| 2004-12 | -34.00 |
| 2004-11 | -32.30 |
| 2004-10 | -31.80 |
| 2004-09 | -28.80 |
| 2004-08 | -24.70 |
| 2004-07 | -19.80 |
| 2004-06 | -12.20 |
| 2004-05 | -8.40 |
| 2004-04 | -2.80 |
| 2004-03 | 2.80 |
| 2004-02 | 277.80 |
| 2004-01 | 275.00 |
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