| 年份 | 单位:% |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2019(E) | 购买后可见 » |
| 2018(E) | 购买后可见 » |
| 2017(E) | 购买后可见 » |
| 2016 | 购买后可见 » |
| 2015 | 购买后可见 » |
| 2014 | 购买后可见 » |
| 2013 | 购买后可见 » |
| 2012 | 购买后可见 » |
| 2011 | 购买后可见 » |
| 2010 | 购买后可见 » |
| 2009 | 购买后可见 » |
| 2008 | 购买后可见 » |
| 2007 | 购买后可见 » |
| 2006 | 97.20 |
| 2005 | 96.70 |
| 2004 | 96.20 |
| 2003 | 94.10 |
| 2002 | 95.40 |
| 2001 | 96.10 |
| 2000 | 95.20 |
| 1999 | 95.40 |
| 1998 | 92.60 |
| 1997 | 91.80 |
| 1996 | 95.50 |
| 1995 | 87.60 |
| 1994 | 87.40 |
| 1993 | 84.70 |
| 1992 | 82.00 |
| 1991 | 93.20 |
| 1990 | 93.90 |
| 1985 | 93.50 |
| 1980 | 90.30 |
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