| 年份 | 单位:% |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2021(E) | 购买后可见 » |
| 2020(E) | 购买后可见 » |
| 2019(E) | 购买后可见 » |
| 2018 | 购买后可见 » |
| 2017 | 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 | 27.28 |
| 2007 | 57.07 |
| 2006 | 51.64 |
| 2005 | 34.91 |
| 2004 | 37.89 |
| 2003 | 35.99 |
| 2002 | 32.39 |
| 2001 | 38.51 |
| 2000 | 51.73 |
| 1999 | 52.59 |
| 1998 | 51.24 |
| 1997 | 33.68 |
| 1996 | 20.35 |
| 1995 | 15.76 |
| 1994 | 16.52 |
| 1993 | 13.25 |
| 1992 | 8.68 |
| 1991 | 10.92 |
| 1990 | 11.85 |
| 1989 | 17.73 |
| 1988 | 12.90 |
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