| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | |
| 8 | 2016 | |
| 9 | 2015 | |
| 10 | 2014 | |
| 11 | 2013 | 23.61 |
| 12 | 2012 | 22.42 |
| 13 | 2011 | 21.81 |
| 14 | 2010 | 22.20 |
| 15 | 2009 | 21.06 |
| 16 | 2008 | 21.55 |
| 17 | 2007 | 21.66 |
| 18 | 2006 | 22.65 |
| 19 | 2005 | 24.40 |
| 20 | 2004 | 24.81 |
| 21 | 2003 | 25.53 |
| 22 | 2002 | 27.46 |
| 23 | 2001 | 30.04 |
| 24 | 2000 | 31.83 |
| 25 | 1999 | 31.69 |
| 26 | 1998 | 31.92 |
| 27 | 1997 | 33.15 |
| 28 | 1996 | 33.73 |
| 29 | 1995 | 33.85 |
| 30 | 1994 | 34.18 |
| 31 | 1993 | 35.93 |
| 32 | 1992 | 35.70 |
| 33 | 1991 | 34.38 |
| 34 | 1990 | 34.04 |
| 35 | 1989 | 33.13 |
| 36 | 1988 | 31.55 |
| 37 | 1987 | 29.78 |
| 38 | 1986 | 30.27 |
| 39 | 1985 | 29.19 |
| 40 | 1984 | 28.85 |
| 41 | 1983 | 22.71 |
| 42 | 1982 | 24.38 |
| 43 | 1981 | 27.08 |
| 44 | 1980 | 23.89 |
| 45 | 1979 | 23.53 |
| 46 | 1978 | 22.23 |
| 47 | 1977 | 22.10 |
| 48 | 1976 | 23.31 |
| 49 | 1975 | 23.12 |
| 50 | 1974 | 22.76 |
| 51 | 1973 | 23.90 |
| 52 | 1972 | 25.08 |
| 53 | 1971 | 24.12 |
| 54 | 1970 | 24.83 |
