| 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 » |
| 2010 | 39.30 |
| 2009 | 36.20 |
| 2008 | 35.80 |
| 2007 | 34.70 |
| 2006 | 33.80 |
| 2005 | 33.00 |
| 2004 | 30.50 |
| 2003 | 29.10 |
| 2002 | 28.50 |
| 2001 | 28.20 |
| 2000 | 28.10 |
| 1999 | 28.40 |
| 1998 | 28.60 |
| 1997 | 33.60 |
| 1996 | 29.80 |
| 1995 | 28.90 |
| 1994 | 27.80 |
| 1993 | 26.20 |
| 1992 | 26.80 |
| 1991 | 26.10 |
| 1990 | 25.30 |
| 1985 | 23.70 |
| 1980 | 21.00 |
| 1978 | 18.10 |
| 1975 | 16.60 |
| 1970 | 17.10 |
| 1965 | 20.20 |
| 1962 | 18.10 |
| 1957 | 15.00 |
| 1952 | 11.90 |
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