| 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 | 2.21 |
| 2013 | 2.23 |
| 2012 | 2.24 |
| 2011 | 2.16 |
| 2010 | 1.97 |
| 2009 | 2.07 |
| 2008 | 3.46 |
| 2007 | 3.35 |
| 2006 | 3.47 |
| 2005 | 3.65 |
| 2004 | 3.66 |
| 2003 | 4.10 |
| 2002 | 5.53 |
| 2001 | 6.99 |
| 2000 | 7.61 |
| 1999 | 8.03 |
| 1998 | 8.48 |
| 1997 | 8.25 |
| 1996 | 8.55 |
| 1995 | 8.88 |
| 1994 | 8.98 |
| 1993 | 9.26 |
| 1992 | 9.17 |
| 1991 | 10.18 |
| 1990 | 10.41 |
| 1989 | 8.42 |
| 1988 | 6.40 |
| 1987 | 7.03 |
| 1986 | 8.24 |
| 1985 | 9.48 |
| 1984 | 10.07 |
| 1983 | 10.71 |
| 1982 | 13.32 |
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