| 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 | 23.44 |
| 2016 | 22.61 |
| 2015 | 22.71 |
| 2014 | 22.71 |
| 2013 | 22.29 |
| 2012 | 22.63 |
| 2011 | 23.22 |
| 2010 | 21.95 |
| 2009 | 21.33 |
| 2008 | 24.13 |
| 2007 | 24.17 |
| 2006 | 23.24 |
| 2005 | 19.97 |
| 2004 | 19.22 |
| 2003 | 18.46 |
| 2002 | 18.59 |
| 2001 | 19.56 |
| 2000 | 19.89 |
| 1999 | 18.81 |
| 1998 | 18.16 |
| 1997 | 16.84 |
| 1996 | 17.03 |
| 1995 | 17.92 |
| 1994 | 17.65 |
| 1993 | 16.82 |
| 1992 | 19.25 |
| 1991 | 20.79 |
| 1990 | 21.60 |
| 1989 | 21.50 |
| 1988 | 20.63 |
| 1987 | 19.50 |
| 1986 | 19.08 |
| 1985 | 18.43 |
| 1984 | 18.49 |
| 1983 | 19.12 |
| 1982 | 21.24 |
| 1981 | 20.97 |
| 1980 | 23.36 |
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