| 序号 |
时间(年) |
数据(单位：%) |
| 1 |
2020 |
|
| 2 |
2019 |
|
| 3 |
2018 |
|
| 4 |
2017 |
|
| 5 |
2016 |
|
| 6 |
2015 |
|
| 7 |
2014 |
26.86 |
| 8 |
2013 |
25.10 |
| 9 |
2012 |
23.43 |
| 10 |
2011 |
20.65 |
| 11 |
2010 |
19.44 |
| 12 |
2009 |
22.80 |
| 13 |
2008 |
18.76 |
| 14 |
2007 |
19.46 |
| 15 |
2006 |
21.46 |
| 16 |
2005 |
20.29 |
| 17 |
2004 |
22.43 |
| 18 |
2003 |
24.66 |
| 19 |
2002 |
25.01 |
| 20 |
2001 |
25.30 |
| 21 |
2000 |
24.73 |
| 22 |
1999 |
24.35 |
| 23 |
1998 |
29.39 |
| 24 |
1997 |
25.77 |
| 25 |
1996 |
27.72 |
| 26 |
1995 |
28.20 |
| 27 |
1994 |
27.84 |
| 28 |
1993 |
29.01 |
| 29 |
1992 |
31.71 |
| 30 |
1991 |
30.68 |
| 31 |
1990 |
28.29 |
| 32 |
1989 |
23.65 |
| 33 |
1988 |
30.55 |
| 34 |
1987 |
25.34 |
| 35 |
1986 |
23.46 |
| 36 |
1985 |
20.63 |
| 37 |
1984 |
19.33 |
| 38 |
1983 |
21.04 |
| 39 |
1982 |
19.91 |
| 40 |
1981 |
19.16 |
| 41 |
1980 |
20.87 |
| 42 |
1979 |
18.41 |
| 43 |
1978 |
22.03 |
| 44 |
1977 |
19.87 |
| 45 |
1976 |
20.69 |
| 46 |
1975 |
19.01 |
| 47 |
1974 |
21.66 |
| 48 |
1973 |
18.91 |
| 49 |
1972 |
26.53 |
| 50 |
1971 |
21.84 |
| 51 |
1970 |
22.41 |
