| 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 | 29.34 |
| 2016 | 28.79 |
| 2015 | 28.24 |
| 2014 | 25.79 |
| 2013 | 25.30 |
| 2012 | 24.96 |
| 2011 | 25.62 |
| 2010 | 26.43 |
| 2009 | 25.35 |
| 2008 | 28.66 |
| 2007 | 30.40 |
| 2006 | 29.87 |
| 2005 | 26.10 |
| 2004 | 26.20 |
| 2003 | 25.57 |
| 2002 | 25.29 |
| 2001 | 26.41 |
| 2000 | 27.63 |
| 1999 | 27.32 |
| 1998 | 29.15 |
| 1997 | 30.32 |
| 1996 | 30.01 |
| 1995 | 30.19 |
| 1994 | 30.74 |
| 1993 | 31.90 |
| 1992 | 33.20 |
| 1991 | 33.83 |
| 1990 | 33.62 |
| 1989 | 33.57 |
| 1988 | 33.01 |
| 1987 | 31.54 |
| 1986 | 31.82 |
| 1985 | 31.54 |
| 1984 | 30.18 |
| 1983 | 29.23 |
| 1982 | 30.09 |
| 1981 | 31.16 |
| 1980 | 30.73 |
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