| 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 | 0.78 |
| 2013 | 0.80 |
| 2012 | 0.82 |
| 2011 | 0.75 |
| 2010 | 0.61 |
| 2009 | 0.85 |
| 2008 | 1.71 |
| 2007 | 1.53 |
| 2006 | 1.40 |
| 2005 | 1.22 |
| 2004 | 1.10 |
| 2003 | 1.47 |
| 2002 | 2.38 |
| 2001 | 4.09 |
| 2000 | 4.62 |
| 1999 | 5.00 |
| 1998 | 5.72 |
| 1997 | 5.36 |
| 1996 | 5.79 |
| 1995 | 6.06 |
| 1994 | 6.04 |
| 1993 | 6.29 |
| 1992 | 6.42 |
| 1991 | 7.13 |
| 1990 | 7.20 |
| 1989 | 5.60 |
| 1988 | 3.79 |
| 1987 | 3.94 |
| 1986 | 4.98 |
| 1985 | 6.28 |
| 1984 | 6.67 |
| 1983 | 7.55 |
| 1982 | 9.16 |
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