| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 28.72 |
| 8 | 2014 | 28.83 |
| 9 | 2013 | 34.52 |
| 10 | 2012 | 37.01 |
| 11 | 2011 | 35.30 |
| 12 | 2010 | 36.45 |
| 13 | 2009 | 35.50 |
| 14 | 2008 | 34.27 |
| 15 | 2007 | 33.99 |
| 16 | 2006 | 35.62 |
| 17 | 2005 | 33.11 |
| 18 | 2004 | 34.92 |
| 19 | 2003 | 37.36 |
| 20 | 2002 | 38.83 |
| 21 | 2001 | 36.94 |
| 22 | 2000 | 36.07 |
| 23 | 1999 | 35.06 |
| 24 | 1998 | 34.59 |
| 25 | 1997 | 37.00 |
| 26 | 1996 | 38.29 |
| 27 | 1995 | 37.25 |
| 28 | 1994 | 37.21 |
| 29 | 1993 | 37.70 |
| 30 | 1992 | 38.23 |
| 31 | 1991 | 38.04 |
| 32 | 1990 | 50.11 |
| 33 | 1987 | 3.30 |
| 34 | 1986 | 3.38 |
| 35 | 1985 | 0.99 |
| 36 | 1983 | 57.71 |
| 37 | 1982 | 58.32 |
| 38 | 1981 | 58.72 |
| 39 | 1980 | 58.60 |
| 40 | 1979 | 60.07 |
| 41 | 1978 | 60.10 |
| 42 | 1977 | 60.49 |
| 43 | 1976 | 60.94 |
| 44 | 1975 | 61.34 |
| 45 | 1974 | 61.69 |
| 46 | 1973 | 62.14 |
| 47 | 1972 | 62.43 |
| 48 | 1971 | 62.80 |
| 49 | 1970 | 63.23 |
