| 年月 | 单位：% |
| 2007-12 | -72.10 |
| 2007-11 | -72.20 |
| 2007-10 | -68.20 |
| 2007-09 | -60.60 |
| 2007-08 | -42.60 |
| 2007-07 | -39.00 |
| 2007-06 | 4.80 |
| 2007-05 | 4.60 |
| 2007-04 | -15.10 |
| 2007-03 | -32.80 |
| 2007-02 | -98.90 |
| 2007-01 | -99.00 |
| 2006-12 | 101.80 |
| 2006-11 | 247.10 |
| 2006-10 | 243.50 |
| 2006-09 | 177.40 |
| 2006-08 | 90.50 |
| 2006-07 | 69.40 |
| 2006-06 | -1.20 |
| 2006-05 | -1.20 |
| 2006-04 | -0.80 |
| 2006-03 | 3942.10 |
| 2006-02 | 6002.30 |
| 2006-01 | 8658.30 |
| 2005-12 | -64.20 |
| 2005-11 | -77.50 |
| 2005-10 | -81.00 |
| 2005-09 | -74.30 |
| 2005-08 | -74.30 |
| 2005-07 | -79.00 |
| 2005-06 | -78.40 |
| 2005-05 | -19.80 |
| 2005-04 | -68.00 |
| 2005-03 | -98.70 |
| 2005-02 | -99.20 |
| 2005-01 | -98.10 |
| 2004-12 | -34.60 |
| 2004-11 | -29.60 |
| 2004-10 | -36.00 |
| 2004-09 | -38.80 |
| 2004-08 | -36.20 |
| 2004-07 | -22.90 |
| 2004-06 | -14.00 |
| 2004-05 | -20.00 |
| 2004-04 | -22.40 |
| 2004-03 | -36.00 |
| 2004-02 | -34.20 |
| 2004-01 | -62.30 |
| 2003-12 | 2.60 |
| 2003-11 | -2.20 |
| 2003-10 | 6.10 |
| 2003-09 | 13.40 |
| 2003-08 | 27.20 |
| 2003-07 | 76.20 |
| 2003-06 | 76.20 |
| 2003-05 | 155.60 |
| 2003-04 | 147.00 |
| 2003-03 | 84.10 |
| 2003-02 | 303.00 |
| 2003-01 | 266.50 |
| 2002-12 | 327.70 |
| 2002-11 | 323.80 |
| 2002-10 | 263.80 |
| 2002-09 | 282.00 |
| 2002-08 | 227.40 |
| 2002-07 | 120.50 |
| 2002-06 | 83.40 |
| 2002-05 | 34.50 |
| 2002-04 | 11.50 |
| 2002-03 | 26.70 |
| 2002-02 | -42.20 |
| 2002-01 | -24.00 |
| 2001-12 | -49.10 |
| 2001-11 | -42.60 |
| 2001-10 | -21.80 |
| 2001-09 | -34.30 |
| 2001-08 | -5.50 |
| 2001-07 | 20.10 |
| 2001-06 | 20.20 |
| 2001-05 | 13.90 |
| 2001-04 | 69.00 |
| 2001-03 | 49.00 |
| 2001-02 | 18.40 |
| 2001-01 | -37.80 |
| 2000-12 | 278.00 |
| 2000-11 | 207.00 |
| 2000-10 | 126.30 |
| 2000-09 | 129.20 |
| 2000-08 | 108.20 |
| 2000-07 | 48.60 |
| 2000-06 | 84.90 |
| 2000-05 | 121.70 |
| 2000-04 | 51.10 |
| 2000-03 | 112.90 |
| 2000-02 | 77.90 |
| 2000-01 | 139.30 |
| 1999-12 | -57.60 |
| 1999-11 | -49.30 |
| 1999-10 | -45.80 |
| 1999-09 | -42.90 |
| 1999-08 | -55.00 |
| 1999-07 | -46.10 |
| 1999-06 | -43.80 |
| 1999-05 | -40.20 |
| 1999-04 | -35.60 |
| 1999-03 | -45.10 |
| 1999-02 | -41.40 |
| 1999-01 | -11.40 |
| 1998-12 | -23.90 |
| 1998-11 | -28.60 |
| 1998-10 | -31.20 |
| 1998-09 | -29.10 |
| 1998-08 | -20.90 |
| 1998-07 | -19.50 |
| 1998-06 | -23.00 |
| 1998-05 | -36.40 |
| 1998-04 | -3.20 |
| 1998-03 | 30.00 |
| 1998-02 | 84.90 |
| 1998-01 | -23.00 |
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