| 年份 | 单位:% |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2025(E) | 购买后可见 » |
| 2024(E) | 购买后可见 » |
| 2023(E) | 购买后可见 » |
| 2022 | 购买后可见 » |
| 2021 | 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 | 62.10 |
| 2011 | 58.10 |
| 2010 | 59.00 |
| 2009 | 60.70 |
| 2008 | 55.80 |
| 2007 | 48.40 |
| 2006 | 39.40 |
| 2005 | 37.70 |
| 2004 | 37.10 |
| 2003 | 36.20 |
| 2002 | 34.70 |
| 2001 | 31.30 |
| 2000 | 33.20 |
| 1999 | 32.80 |
| 1998 | 33.30 |
| 1997 | 34.50 |
| 1996 | 37.00 |
| 1995 | 40.20 |
| 1994 | 40.50 |
| 1993 | 38.40 |
| 1992 | 42.90 |
| 1991 | 43.50 |
| 1990 | 43.40 |
| 1989 | 44.60 |
| 1988 | 47.30 |
| 1987 | 47.40 |
| 1986 | 46.00 |
| 1985 | 46.00 |
| 1984 | 49.10 |
| 1983 | 56.60 |
| 1982 | 54.20 |
| 1981 | 53.50 |
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