| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2025 | |
| 2 | 2024 | |
| 3 | 2023 | |
| 4 | 2022 | |
| 5 | 2021 | |
| 6 | 2020 | |
| 7 | 2019 | |
| 8 | 2018 | |
| 9 | 2017 | |
| 10 | 2016 | |
| 11 | 2015 | 19.94 |
| 12 | 2014 | 19.67 |
| 13 | 2013 | 19.31 |
| 14 | 2012 | 18.50 |
| 15 | 2011 | 18.33 |
| 16 | 2010 | 17.28 |
| 17 | 2009 | 16.68 |
| 18 | 2008 | 19.35 |
| 19 | 2007 | 20.46 |
| 20 | 2006 | 20.46 |
| 21 | 2005 | 19.72 |
| 22 | 2004 | 18.26 |
| 23 | 2003 | 17.95 |
| 24 | 2002 | 18.39 |
| 25 | 2001 | 20.57 |
| 26 | 2000 | 21.48 |
| 27 | 1999 | 20.73 |
| 28 | 1998 | 20.87 |
| 29 | 1997 | 20.32 |
| 30 | 1996 | 19.91 |
| 31 | 1995 | 19.63 |
| 32 | 1994 | 19.21 |
| 33 | 1993 | 18.96 |
| 34 | 1992 | 18.55 |
| 35 | 1991 | 18.85 |
| 36 | 1990 | 18.88 |
| 37 | 1989 | 19.23 |
| 38 | 1988 | 19.05 |
| 39 | 1987 | 19.41 |
| 40 | 1986 | 18.42 |
| 41 | 1985 | 18.54 |
| 42 | 1984 | 18.18 |
| 43 | 1983 | 18.27 |
| 44 | 1982 | 20.04 |
| 45 | 1981 | 20.27 |
| 46 | 1980 | 20.06 |
| 47 | 1979 | 19.95 |
| 48 | 1978 | 19.89 |
| 49 | 1977 | 20.15 |
| 50 | 1976 | 19.27 |
| 51 | 1975 | 19.86 |
| 52 | 1974 | 20.56 |
| 53 | 1973 | 20.17 |
| 54 | 1972 | 20.62 |
