| 年份 | 单位：% |
| 含“(E)”其对应值为系统预测，仅供参考。 | |
| 2025（E） | 购买后可见 » |
| 2024（E） | 购买后可见 » |
| 2023（E） | 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 | 购买后可见 » |
| 2013 | 购买后可见 » |
| 2012 | 97.02 |
| 2011 | 97.01 |
| 2010 | 97.05 |
| 2009 | 96.63 |
| 2008 | 97.17 |
| 2007 | 97.17 |
| 2006 | 96.86 |
| 2005 | 96.86 |
| 2004 | 96.43 |
| 2003 | 96.80 |
| 2002 | 96.71 |
| 2001 | 97.92 |
| 2000 | 97.32 |
| 1999 | 97.51 |
| 1998 | 97.42 |
| 1997 | 97.37 |
| 1996 | 97.46 |
| 1995 | 97.67 |
| 1994 | 97.48 |
| 1993 | 98.49 |
| 1992 | 96.80 |
| 1991 | 98.10 |
| 1990 | 97.90 |
| 1989 | 98.57 |
| 1988 | 98.76 |
| 1987 | 98.81 |
| 1986 | 99.04 |
| 1985 | 99.10 |
| 1984 | 99.17 |
| 1983 | 99.16 |
| 1982 | 99.13 |
| 1981 | 99.06 |
| 1980 | 99.00 |
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