| 年份 | 單位:% |
| 含“(E)”其對應值為系統預測,僅供參考。 | |
| 2026(E) | 購買后可見 ? |
| 2025(E) | 購買后可見 ? |
| 2024(E) | 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 | 購買后可見 ? |
| 2014 | 購買后可見 ? |
| 2013 | 40.51 |
| 2012 | 41.92 |
| 2011 | 45.91 |
| 2010 | 49.62 |
| 2009 | 40.69 |
| 2008 | 43.35 |
| 2007 | 43.79 |
| 2006 | 42.30 |
| 2005 | 43.10 |
| 2004 | 47.55 |
| 2003 | 51.60 |
| 2002 | 44.29 |
| 2001 | 41.98 |
| 2000 | 56.86 |
| 1999 | 54.29 |
| 1998 | 54.51 |
| 1997 | 57.84 |
| 1996 | 58.06 |
| 1995 | 57.32 |
| 1994 | 61.55 |
| 1993 | 58.30 |
| 1992 | 56.61 |
| 1991 | 56.49 |
| 1990 | 38.62 |
| 1989 | 53.63 |
| 1988 | 58.12 |
| 1987 | 48.05 |
| 1986 | 45.63 |
| 1985 | 54.67 |
| 1984 | 39.80 |
| 1983 | 37.30 |
| 1982 | 27.29 |
| 1981 | 14.99 |
| 1980 | 74.92 |
| 1979 | 52.82 |
| 1978 | 62.17 |
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