| 序号 |
时间(年) |
数据(单位：%) |
| 1 |
2021 |
|
| 2 |
2020 |
|
| 3 |
2019 |
|
| 4 |
2018 |
|
| 5 |
2017 |
|
| 6 |
2016 |
|
| 7 |
2015 |
33.04 |
| 8 |
2014 |
34.28 |
| 9 |
2013 |
34.98 |
| 10 |
2012 |
35.93 |
| 11 |
2011 |
37.19 |
| 12 |
2010 |
39.13 |
| 13 |
2009 |
40.45 |
| 14 |
2008 |
41.10 |
| 15 |
2007 |
41.26 |
| 16 |
2006 |
42.06 |
| 17 |
2005 |
43.99 |
| 18 |
2004 |
43.33 |
| 19 |
2003 |
46.38 |
| 20 |
2002 |
44.34 |
| 21 |
2001 |
43.77 |
| 22 |
2000 |
45.28 |
| 23 |
1999 |
43.23 |
| 24 |
1998 |
44.97 |
| 25 |
1997 |
40.76 |
| 26 |
1996 |
42.32 |
| 27 |
1995 |
43.98 |
| 28 |
1994 |
44.84 |
| 29 |
1993 |
49.29 |
| 30 |
1992 |
51.90 |
| 31 |
1991 |
52.24 |
| 32 |
1990 |
55.87 |
| 33 |
1989 |
56.23 |
| 34 |
1988 |
55.93 |
| 35 |
1987 |
55.00 |
| 36 |
1986 |
55.09 |
| 37 |
1985 |
54.66 |
| 38 |
1982 |
54.66 |
| 39 |
1980 |
56.39 |
| 40 |
1979 |
64.04 |
| 41 |
1978 |
60.92 |
| 42 |
1977 |
61.46 |
| 43 |
1976 |
65.97 |
