| 年份 | 单位:% |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2026(E) | 购买后可见 » |
| 2025(E) | 购买后可见 » |
| 2024(E) | 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 | 购买后可见 » |
| 2013 | 36.00 |
| 2012 | 34.06 |
| 2011 | 33.55 |
| 2010 | 29.73 |
| 2009 | 34.97 |
| 2008 | 29.70 |
| 2007 | 31.80 |
| 2006 | 28.62 |
| 2005 | 29.54 |
| 2004 | 28.27 |
| 2003 | 35.24 |
| 2002 | 5.85 |
| 2001 | 37.76 |
| 2000 | 29.06 |
| 1999 | 33.84 |
| 1998 | 31.35 |
| 1997 | 32.94 |
| 1996 | 26.60 |
| 1995 | 26.90 |
| 1994 | 28.25 |
| 1993 | 23.45 |
| 1992 | 24.30 |
| 1991 | 43.20 |
| 1990 | 42.70 |
| 1989 | 40.20 |
| 1988 | 26.40 |
| 1987 | 39.80 |
| 1986 | 45.20 |
| 1985 | 49.90 |
| 1984 | 22.40 |
| 1983 | 26.00 |
| 1982 | 39.80 |
| 1981 | 31.60 |
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