| 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 | 98.13 |
| 2016 | 97.96 |
| 2015 | 95.58 |
| 2014 | 94.89 |
| 2013 | 93.41 |
| 2012 | 90.60 |
| 2011 | 87.84 |
| 2010 | 85.26 |
| 2009 | 83.04 |
| 2008 | 68.78 |
| 2007 | 64.54 |
| 2006 | 64.61 |
| 2005 | 66.43 |
| 2004 | 64.96 |
| 2003 | 62.86 |
| 2002 | 58.77 |
| 2001 | 56.87 |
| 2000 | 57.28 |
| 1999 | 58.85 |
| 1998 | 59.40 |
| 1997 | 59.29 |
| 1996 | 57.98 |
| 1995 | 55.44 |
| 1994 | 49.39 |
| 1993 | 46.25 |
| 1992 | 39.77 |
| 1991 | 35.97 |
| 1990 | 35.17 |
| 1989 | 33.97 |
| 1988 | 33.27 |
| 1987 | 33.26 |
| 1986 | 31.07 |
| 1985 | 30.58 |
| 1984 | 29.06 |
| 1983 | 26.72 |
| 1982 | 25.35 |
| 1981 | 22.00 |
| 1980 | 20.41 |
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