| 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 | 22.67 |
| 2016 | 22.12 |
| 2015 | 22.34 |
| 2014 | 21.75 |
| 2013 | 21.78 |
| 2012 | 21.66 |
| 2011 | 22.36 |
| 2010 | 21.32 |
| 2009 | 20.78 |
| 2008 | 23.43 |
| 2007 | 24.06 |
| 2006 | 23.49 |
| 2005 | 19.49 |
| 2004 | 19.76 |
| 2003 | 19.18 |
| 2002 | 19.84 |
| 2001 | 21.31 |
| 2000 | 21.34 |
| 1999 | 21.96 |
| 1998 | 20.78 |
| 1997 | 19.49 |
| 1996 | 18.26 |
| 1995 | 18.38 |
| 1994 | 18.25 |
| 1993 | 17.52 |
| 1992 | 19.52 |
| 1991 | 20.37 |
| 1990 | 20.89 |
| 1989 | 21.12 |
| 1988 | 20.24 |
| 1987 | 19.09 |
| 1986 | 19.46 |
| 1985 | 18.45 |
| 1984 | 18.42 |
| 1983 | 18.35 |
| 1982 | 19.20 |
| 1981 | 20.26 |
| 1980 | 22.84 |
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