| 年份 | 单位:% |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2023(E) | 购买后可见 » |
| 2022(E) | 购买后可见 » |
| 2021(E) | 购买后可见 » |
| 2020 | 购买后可见 » |
| 2019 | 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 | 14.84 |
| 2009 | 14.70 |
| 2008 | 14.16 |
| 2007 | 14.25 |
| 2006 | 13.71 |
| 2005 | 15.51 |
| 2004 | 13.23 |
| 2003 | 13.27 |
| 2002 | 13.66 |
| 2001 | 13.45 |
| 2000 | 13.78 |
| 1999 | 15.05 |
| 1998 | 15.60 |
| 1997 | 14.73 |
| 1996 | 17.45 |
| 1995 | 18.37 |
| 1994 | 18.37 |
| 1993 | 18.75 |
| 1992 | 17.28 |
| 1991 | 17.32 |
| 1990 | 17.39 |
| 1989 | 17.00 |
| 1988 | 17.39 |
| 1987 | 16.55 |
| 1986 | 16.42 |
| 1985 | 15.54 |
| 1980 | 14.84 |
| 1978 | 14.33 |
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