| 季度 | 单位：% |
| 2012-12 | 购买后可见 » |
| 2012-09 | 购买后可见 » |
| 2012-06 | 购买后可见 » |
| 2012-03 | 购买后可见 » |
| 2011-12 | 购买后可见 » |
| 2011-09 | 购买后可见 » |
| 2011-06 | 购买后可见 » |
| 2011-03 | 购买后可见 » |
| 2010-12 | 购买后可见 » |
| 2010-09 | 购买后可见 » |
| 2010-06 | 购买后可见 » |
| 2010-03 | 购买后可见 » |
| 2009-12 | 购买后可见 » |
| 2009-09 | 购买后可见 » |
| 2009-06 | 购买后可见 » |
| 2009-03 | 购买后可见 » |
| 2008-12 | 购买后可见 » |
| 2008-09 | 购买后可见 » |
| 2008-06 | 购买后可见 » |
| 2008-03 | 购买后可见 » |
| 2007-12 | 购买后可见 » |
| 2007-09 | 购买后可见 » |
| 2007-06 | 购买后可见 » |
| 2007-03 | 购买后可见 » |
| 2006-12 | 购买后可见 » |
| 2006-09 | 购买后可见 » |
| 2006-06 | 购买后可见 » |
| 2006-03 | 购买后可见 » |
| 2005-12 | 购买后可见 » |
| 2005-09 | 购买后可见 » |
| 2005-06 | 购买后可见 » |
| 2005-03 | 购买后可见 » |
| 2004-12 | 购买后可见 » |
| 2004-09 | 购买后可见 » |
| 2004-06 | 购买后可见 » |
| 2004-03 | 购买后可见 » |
| 2003-12 | 15.60 |
| 2003-09 | 7.50 |
| 2003-06 | 63.70 |
| 2003-03 | -18.70 |
| 2002-12 | 16.10 |
| 2002-09 | 11.40 |
| 2002-06 | 11.70 |
| 2002-03 | -5.30 |
| 2001-12 | 13.00 |
| 2001-09 | 14.80 |
| 2001-06 | 3.70 |
| 2001-03 | -17.80 |
| 2000-12 | -2.70 |
| 2000-09 | 34.90 |
| 2000-06 | -6.80 |
| 2000-03 | -5.10 |
| 1999-12 | -14.50 |
| 1999-09 | -5.70 |
| 1999-06 | -8.90 |
| 1999-03 | -6.40 |
| 1998-12 | -44.90 |
| 1998-09 | -54.60 |
| 1998-06 | -26.20 |
| 1998-03 | 21.70 |
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