| 序号 |
时间(年) |
数据(单位：%) |
| 1 |
2021 |
|
| 2 |
2020 |
|
| 3 |
2019 |
|
| 4 |
2018 |
|
| 5 |
2017 |
|
| 6 |
2016 |
|
| 7 |
2015 |
51.36 |
| 8 |
2014 |
49.69 |
| 9 |
2013 |
48.82 |
| 10 |
2012 |
50.02 |
| 11 |
2011 |
52.76 |
| 12 |
2010 |
54.16 |
| 13 |
2009 |
55.85 |
| 14 |
2008 |
61.78 |
| 15 |
2007 |
64.14 |
| 16 |
2006 |
64.02 |
| 17 |
2005 |
63.25 |
| 18 |
2004 |
61.60 |
| 19 |
2003 |
61.26 |
| 20 |
2002 |
60.84 |
| 21 |
2001 |
60.54 |
| 22 |
2000 |
59.36 |
| 23 |
1999 |
57.94 |
| 24 |
1998 |
55.80 |
| 25 |
1997 |
54.03 |
| 26 |
1996 |
52.97 |
| 27 |
1995 |
52.73 |
| 28 |
1994 |
52.20 |
| 29 |
1993 |
53.56 |
| 30 |
1992 |
57.23 |
| 31 |
1991 |
57.48 |
| 32 |
1990 |
58.15 |
| 33 |
1989 |
57.19 |
| 34 |
1988 |
55.96 |
| 35 |
1987 |
55.72 |
| 36 |
1986 |
54.87 |
| 37 |
1985 |
54.86 |
| 38 |
1984 |
56.19 |
| 39 |
1983 |
58.72 |
| 40 |
1982 |
60.33 |
| 41 |
1981 |
61.89 |
| 42 |
1980 |
64.35 |
| 43 |
1979 |
67.30 |
| 44 |
1978 |
69.32 |
| 45 |
1977 |
71.54 |
