| 年份 | 单位:% |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2030(E) | 购买后可见 » |
| 2029(E) | 购买后可见 » |
| 2028(E) | 购买后可见 » |
| 2027 | 购买后可见 » |
| 2026 | 购买后可见 » |
| 2025 | 购买后可见 » |
| 2024 | 购买后可见 » |
| 2023 | 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 | 75.71 |
| 2016 | 76.94 |
| 2015 | 77.58 |
| 2014 | 77.32 |
| 2013 | 75.37 |
| 2012 | 74.28 |
| 2011 | 71.34 |
| 2010 | 66.91 |
| 2009 | 56.19 |
| 2008 | 43.25 |
| 2007 | 36.31 |
| 2006 | 35.99 |
| 2005 | 37.39 |
| 2004 | 35.56 |
| 2003 | 33.69 |
| 2002 | 31.95 |
| 2001 | 32.19 |
| 2000 | 33.60 |
| 1999 | 39.23 |
| 1998 | 41.52 |
| 1997 | 44.36 |
| 1996 | 43.70 |
| 1995 | 40.56 |
| 1994 | 36.81 |
| 1993 | 31.76 |
| 1992 | 27.25 |
| 1991 | 25.83 |
| 1990 | 26.69 |
| 1989 | 29.84 |
| 1988 | 35.12 |
| 1987 | 38.88 |
| 1986 | 41.36 |
| 1985 | 42.39 |
| 1984 | 42.70 |
| 1983 | 42.12 |
| 1982 | 43.31 |
| 1981 | 43.34 |
| 1980 | 40.49 |
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