| 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 | 55.40 |
| 2011 | 54.70 |
| 2010 | 48.90 |
| 2009 | 49.60 |
| 2008 | 49.20 |
| 2007 | 45.90 |
| 2006 | 48.50 |
| 2005 | 47.50 |
| 2004 | 46.50 |
| 2003 | 47.60 |
| 2002 | 51.10 |
| 2001 | 44.00 |
| 2000 | 58.20 |
| 1999 | 62.30 |
| 1998 | 60.20 |
| 1997 | 61.60 |
| 1996 | 62.30 |
| 1995 | 55.50 |
| 1994 | 55.80 |
| 1993 | 64.60 |
| 1992 | 59.10 |
| 1991 | 40.80 |
| 1990 | 34.10 |
| 1989 | 43.40 |
| 1988 | 60.20 |
| 1987 | 60.10 |
| 1986 | 71.50 |
| 1985 | 63.00 |
| 1984 | 63.70 |
| 1983 | 19.50 |
| 1982 | 12.50 |
| 1981 | -168.30 |
| 1980 | 37.60 |
| 1979 | 63.30 |
| 1978 | 60.50 |
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