| 年份 | 单位:% |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2027(E) | 购买后可见 » |
| 2026(E) | 购买后可见 » |
| 2025(E) | 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 | 购买后可见 » |
| 2016 | 购买后可见 » |
| 2015 | 购买后可见 » |
| 2014 | 2.38 |
| 2013 | 2.37 |
| 2012 | 2.42 |
| 2011 | 2.38 |
| 2010 | 2.13 |
| 2009 | 2.27 |
| 2008 | 3.42 |
| 2007 | 3.30 |
| 2006 | 3.29 |
| 2005 | 3.51 |
| 2004 | 4.01 |
| 2003 | 5.16 |
| 2002 | 6.74 |
| 2001 | 7.84 |
| 2000 | 8.39 |
| 1999 | 8.72 |
| 1998 | 9.22 |
| 1997 | 9.23 |
| 1996 | 9.56 |
| 1995 | 9.74 |
| 1994 | 9.93 |
| 1993 | 10.15 |
| 1992 | 10.14 |
| 1991 | 11.38 |
| 1990 | 11.51 |
| 1989 | 9.86 |
| 1988 | 7.26 |
| 1987 | 8.02 |
| 1986 | 9.23 |
| 1985 | 10.33 |
| 1984 | 10.60 |
| 1983 | 10.96 |
| 1982 | 13.75 |
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