| 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 | 39.20 |
| 2009 | 38.90 |
| 2008 | 38.30 |
| 2007 | 35.70 |
| 2006 | 36.10 |
| 2005 | 34.70 |
| 2004 | 33.60 |
| 2003 | 35.70 |
| 2002 | 38.10 |
| 2001 | 36.80 |
| 2000 | 35.80 |
| 1999 | 36.00 |
| 1998 | 35.00 |
| 1997 | 34.50 |
| 1996 | 35.80 |
| 1995 | 35.80 |
| 1994 | 34.80 |
| 1993 | 37.10 |
| 1992 | 35.70 |
| 1991 | 33.90 |
| 1990 | 31.20 |
| 1989 | 32.10 |
| 1988 | 30.50 |
| 1987 | 30.00 |
| 1986 | 28.90 |
| 1985 | 27.00 |
| 1984 | 27.80 |
| 1983 | 25.70 |
| 1982 | 25.20 |
| 1981 | 24.30 |
| 1980 | 23.90 |
| 1979 | 23.80 |
| 1978 | 22.70 |
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