| 季度 | 单位：万只 |
| 2012-06 | 购买后可见 » |
| 2011-12 | 购买后可见 » |
| 2011-06 | 购买后可见 » |
| 2010-12 | 购买后可见 » |
| 2010-06 | 购买后可见 » |
| 2009-12 | 购买后可见 » |
| 2009-06 | 购买后可见 » |
| 2008-12 | 购买后可见 » |
| 2008-06 | 购买后可见 » |
| 2007-12 | 购买后可见 » |
| 2007-06 | 购买后可见 » |
| 2006-12 | 购买后可见 » |
| 2006-06 | 购买后可见 » |
| 2005-12 | 购买后可见 » |
| 2005-06 | 购买后可见 » |
| 2004-12 | 购买后可见 » |
| 2004-06 | 购买后可见 » |
| 2003-12 | 购买后可见 » |
| 2003-06 | 购买后可见 » |
| 2002-12 | 购买后可见 » |
| 2002-06 | 289.77 |
| 2001-12 | 479.55 |
| 2001-06 | 229.39 |
| 2000-12 | 378.40 |
| 2000-06 | 184.44 |
| 1999-12 | 135.56 |
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