| 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 | 20.79 |
| 2016 | 20.57 |
| 2015 | 21.20 |
| 2014 | 20.78 |
| 2013 | 20.34 |
| 2012 | 19.95 |
| 2011 | 19.03 |
| 2010 | 18.67 |
| 2009 | 17.77 |
| 2008 | 21.04 |
| 2007 | 22.56 |
| 2006 | 23.54 |
| 2005 | 23.22 |
| 2004 | 22.52 |
| 2003 | 21.66 |
| 2002 | 21.57 |
| 2001 | 22.05 |
| 2000 | 23.56 |
| 1999 | 23.31 |
| 1998 | 22.85 |
| 1997 | 22.36 |
| 1996 | 21.63 |
| 1995 | 21.21 |
| 1994 | 21.22 |
| 1993 | 20.33 |
| 1992 | 20.02 |
| 1991 | 20.06 |
| 1990 | 21.47 |
| 1989 | 22.45 |
| 1988 | 22.76 |
| 1987 | 23.55 |
| 1986 | 23.69 |
| 1985 | 24.15 |
| 1984 | 25.08 |
| 1983 | 22.23 |
| 1982 | 22.06 |
| 1981 | 24.25 |
| 1980 | 23.27 |
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