| 年月 | 单位：% |
| 2008-12 | 312.30 |
| 2008-11 | -61.10 |
| 2008-10 | -52.40 |
| 2008-09 | 97.30 |
| 2008-08 | 107.90 |
| 2008-07 | -55.00 |
| 2008-06 | 53.40 |
| 2008-05 | 225.20 |
| 2008-04 | -7.50 |
| 2008-03 | 75.40 |
| 2008-02 | -98.50 |
| 2008-01 | 93.80 |
| 2007-12 | -49.30 |
| 2007-11 | -47.30 |
| 2007-10 | -76.80 |
| 2007-09 | -86.20 |
| 2007-08 | -22.00 |
| 2007-07 | 47.50 |
| 2007-06 | -54.40 |
| 2007-05 | -63.50 |
| 2007-04 | 14.70 |
| 2007-03 | 133.10 |
| 2007-02 | 258.30 |
| 2007-01 | 16.75 |
| 2006-12 | -33.60 |
| 2006-11 | 4.60 |
| 2006-10 | -31.50 |
| 2006-09 | -36.30 |
| 2006-08 | -27.30 |
| 2006-07 | -56.90 |
| 2006-06 | -8.20 |
| 2006-05 | -64.60 |
| 2006-04 | -60.00 |
| 2006-03 | -47.30 |
| 2006-02 | -38.00 |
| 2006-01 | -43.29 |
| 2005-12 | -41.20 |
| 2005-11 | -1.50 |
| 2005-10 | 129.70 |
| 2005-09 | 149.70 |
| 2005-08 | -45.60 |
| 2005-07 | 68.40 |
| 2005-06 | -4.40 |
| 2005-05 | -23.10 |
| 2005-04 | -35.00 |
| 2005-03 | -39.40 |
| 2005-02 | 394.20 |
| 2005-01 | 90.80 |
| 2004-12 | 18.20 |
| 2004-11 | 28.30 |
| 2004-10 | -49.20 |
| 2004-09 | 284.50 |
| 2004-08 | 116.80 |
| 2004-07 | -48.30 |
| 2004-06 | -23.60 |
| 2004-05 | 120.60 |
| 2004-04 | -36.00 |
| 2004-03 | 100.70 |
| 2004-02 | -3.00 |
| 2004-01 | -1.80 |
| 2003-12 | -19.66 |
| 2003-11 | -37.29 |
| 2003-10 | 8.13 |
| 2003-09 | 106.20 |
| 2003-08 | -38.90 |
| 2003-07 | 56.55 |
| 2003-06 | 29.85 |
| 2003-05 | 164.56 |
| 2003-04 | 30.36 |
| 2003-03 | -57.42 |
| 2003-02 | 38.76 |
| 2003-01 | 125.20 |
| 2002-12 | -92.34 |
| 2002-11 | 69.90 |
| 2002-10 | 166.37 |
| 2002-09 | -47.65 |
| 2002-08 | 87.14 |
| 2002-07 | 12.38 |
| 2002-06 | 61.85 |
| 2002-05 | -52.73 |
| 2002-04 | 75.35 |
| 2002-03 | 265.52 |
| 2002-02 | -52.59 |
| 2002-01 | -15.17 |
| 2001-12 | 151.08 |
| 2001-11 | -37.10 |
| 2001-10 | -53.22 |
| 2001-09 | -24.79 |
| 2001-08 | -54.13 |
| 2001-07 | 32.82 |
| 2001-06 | -46.76 |
| 2001-05 | 52.70 |
| 2001-04 | -44.30 |
| 2001-03 | -71.30 |
| 2001-02 | 41.90 |
| 2001-01 | -67.70 |
| 2000-12 | -37.60 |
| 2000-11 | 45.10 |
| 2000-10 | -13.00 |
| 2000-09 | -8.50 |
| 2000-08 | -5.50 |
| 2000-07 | 102.70 |
| 2000-06 | 32.36 |
| 2000-05 | 50.10 |
| 2000-04 | 4.20 |
| 2000-03 | 0.40 |
| 2000-02 | 106.40 |
| 2000-01 | -33.87 |
| 1999-12 | 30.76 |
| 1999-11 | 4.30 |
| 1999-10 | -4.33 |
| 1999-09 | -11.18 |
| 1999-08 | 15.76 |
| 1999-07 | -19.46 |
| 1999-06 | 32.25 |
| 1999-05 | -37.64 |
| 1999-04 | -16.31 |
| 1999-03 | -27.45 |
| 1999-02 | -38.38 |
| 1999-01 | -23.60 |
| 1998-12 | -11.50 |
| 1998-11 | 68.80 |
| 1998-10 | -1.00 |
| 1998-09 | 105.70 |
| 1998-08 | 18.30 |
| 1998-07 | 63.60 |
| 1998-06 | 26.50 |
| 1998-05 | 27.90 |
| 1998-04 | 43.00 |
| 1998-03 | 1.90 |
| 1998-02 | 55.40 |
| 1998-01 | 18.50 |
| 1997-12 | 9.96 |
| 1997-11 | -21.15 |
| 1997-10 | 57.63 |
| 1997-09 | -57.13 |
| 1997-08 | -6.94 |
| 1997-07 | 27.17 |
| 1997-06 | -19.21 |
| 1997-05 | 8.55 |
| 1997-04 | 10.30 |
| 1997-03 | -29.24 |
| 1997-02 | 16.57 |
| 1997-01 | -0.50 |
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