| 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 | 20.71 |
| 2016 | 20.01 |
| 2015 | 18.91 |
| 2014 | 19.03 |
| 2013 | 17.97 |
| 2012 | 17.73 |
| 2011 | 17.70 |
| 2010 | 17.29 |
| 2009 | 17.67 |
| 2008 | 18.97 |
| 2007 | 21.00 |
| 2006 | 20.58 |
| 2005 | 20.02 |
| 2004 | 20.66 |
| 2003 | 20.11 |
| 2002 | 20.89 |
| 2001 | 20.99 |
| 2000 | 20.62 |
| 1999 | 21.41 |
| 1998 | 21.70 |
| 1997 | 22.57 |
| 1996 | 22.43 |
| 1995 | 22.76 |
| 1994 | 20.28 |
| 1993 | 19.93 |
| 1992 | 18.65 |
| 1991 | 19.43 |
| 1990 | 20.35 |
| 1989 | 20.21 |
| 1988 | 21.18 |
| 1987 | 20.03 |
| 1986 | 20.70 |
| 1985 | 19.81 |
| 1984 | 20.70 |
| 1983 | 20.37 |
| 1982 | 20.15 |
| 1981 | 20.82 |
| 1980 | 23.30 |
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