| 年份 | 单位：% |
| 含“(E)”其对应值为系统预测，仅供参考。 | |
| 2030（E） | 购买后可见 » |
| 2029（E） | 购买后可见 » |
| 2028（E） | 购买后可见 » |
| 2027 | 购买后可见 » |
| 2026 | 购买后可见 » |
| 2025 | 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 | 106.22 |
| 2016 | 107.19 |
| 2015 | 105.16 |
| 2014 | 104.58 |
| 2013 | 104.59 |
| 2012 | 103.10 |
| 2011 | 99.55 |
| 2010 | 95.21 |
| 2009 | 86.65 |
| 2008 | 73.48 |
| 2007 | 64.63 |
| 2006 | 64.25 |
| 2005 | 60.66 |
| 2004 | 60.36 |
| 2003 | 59.38 |
| 2002 | 56.14 |
| 2001 | 53.72 |
| 2000 | 54.16 |
| 1999 | 59.66 |
| 1998 | 62.90 |
| 1997 | 66.54 |
| 1996 | 68.91 |
| 1995 | 69.13 |
| 1994 | 68.97 |
| 1993 | 69.80 |
| 1992 | 67.92 |
| 1991 | 65.51 |
| 1990 | 61.15 |
| 1989 | 59.10 |
| 1988 | 59.19 |
| 1987 | 58.47 |
| 1986 | 56.71 |
| 1985 | 53.10 |
| 1984 | 48.85 |
| 1983 | 47.10 |
| 1982 | 43.90 |
| 1981 | 39.00 |
| 1980 | 43.57 |
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