| 序号 |
时间(年) |
数据(单位：%) |
| 1 |
2018 |
|
| 2 |
2017 |
|
| 3 |
2016 |
|
| 4 |
2015 |
|
| 5 |
2014 |
|
| 6 |
2013 |
|
| 7 |
2012 |
|
| 8 |
2011 |
|
| 9 |
2010 |
|
| 10 |
2009 |
|
| 11 |
2008 |
35.33 |
| 12 |
2007 |
34.78 |
| 13 |
2006 |
33.99 |
| 14 |
2005 |
32.87 |
| 15 |
2004 |
31.85 |
| 16 |
2003 |
30.30 |
| 17 |
2002 |
29.12 |
| 18 |
2001 |
28.51 |
| 19 |
2000 |
28.08 |
| 20 |
1999 |
27.75 |
| 21 |
1998 |
27.21 |
| 22 |
1997 |
27.40 |
| 23 |
1996 |
26.82 |
| 24 |
1995 |
26.58 |
| 25 |
1994 |
25.53 |
| 26 |
1993 |
24.48 |
| 27 |
1992 |
23.46 |
| 28 |
1991 |
22.69 |
| 29 |
1990 |
21.86 |
| 30 |
1989 |
21.48 |
| 31 |
1988 |
20.80 |
| 32 |
1987 |
20.13 |
| 33 |
1986 |
19.75 |
| 34 |
1985 |
19.31 |
| 35 |
1984 |
19.00 |
| 36 |
1983 |
18.61 |
| 37 |
1982 |
18.04 |
| 38 |
1981 |
17.80 |
| 39 |
1980 |
17.59 |
| 40 |
1979 |
17.15 |
| 41 |
1978 |
16.93 |
| 42 |
1977 |
16.44 |
| 43 |
1976 |
16.09 |
| 44 |
1975 |
16.16 |
| 45 |
1974 |
15.65 |
| 46 |
1973 |
15.42 |
| 47 |
1972 |
15.02 |
| 48 |
1971 |
14.95 |
| 49 |
1970 |
14.24 |
| 50 |
1969 |
13.24 |
| 51 |
1968 |
12.36 |
| 52 |
1967 |
12.13 |
| 53 |
1966 |
11.97 |
| 54 |
1965 |
11.63 |
