| 年份 | 單位:% |
| 含“(E)”其對應值為系統預測,僅供參考。 | |
| 2028(E) | 購買后可見 ? |
| 2027(E) | 購買后可見 ? |
| 2026(E) | 購買后可見 ? |
| 2025 | 購買后可見 ? |
| 2024 | 購買后可見 ? |
| 2023 | 購買后可見 ? |
| 2022 | 購買后可見 ? |
| 2021 | 購買后可見 ? |
| 2020 | 購買后可見 ? |
| 2019 | 購買后可見 ? |
| 2018 | 購買后可見 ? |
| 2017 | 購買后可見 ? |
| 2016 | 購買后可見 ? |
| 2015 | 7.27 |
| 2014 | 7.61 |
| 2013 | 8.03 |
| 2012 | 7.81 |
| 2011 | 7.99 |
| 2010 | 8.02 |
| 2009 | 7.37 |
| 2008 | 7.82 |
| 2007 | 7.85 |
| 2006 | 8.95 |
| 2005 | 6.94 |
| 2004 | 7.19 |
| 2003 | 6.18 |
| 2002 | 6.81 |
| 2001 | 4.77 |
| 2000 | 6.43 |
| 1999 | 4.03 |
| 1998 | 4.28 |
| 1997 | 6.91 |
| 1996 | 6.89 |
| 1995 | 7.05 |
| 1994 | 8.16 |
| 1993 | 5.87 |
| 1992 | 7.00 |
| 1991 | 4.00 |
| 1990 | 6.69 |
| 1989 | 9.89 |
| 1988 | -2.10 |
| 1987 | -0.96 |
| 1986 | 4.83 |
| 1985 | 9.12 |
| 1984 | 6.44 |
| 1983 | 3.00 |
| 1982 | 4.72 |
| 1981 | 15.33 |
| 1980 | 10.00 |
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