| 序号 |
时间(年) |
数据(单位：%) |
| 1 |
2021 |
|
| 2 |
2020 |
|
| 3 |
2019 |
|
| 4 |
2018 |
|
| 5 |
2017 |
|
| 6 |
2016 |
|
| 7 |
2015 |
19.32 |
| 8 |
2014 |
19.05 |
| 9 |
2013 |
18.41 |
| 10 |
2012 |
18.01 |
| 11 |
2011 |
17.42 |
| 12 |
2010 |
17.35 |
| 13 |
2009 |
17.82 |
| 14 |
2008 |
18.07 |
| 15 |
2007 |
18.35 |
| 16 |
2006 |
18.95 |
| 17 |
2005 |
19.51 |
| 18 |
2004 |
20.35 |
| 19 |
2003 |
20.75 |
| 20 |
2002 |
21.61 |
| 21 |
2001 |
21.48 |
| 22 |
2000 |
21.56 |
| 23 |
1999 |
21.87 |
| 24 |
1998 |
21.90 |
| 25 |
1997 |
22.08 |
| 26 |
1996 |
22.12 |
| 27 |
1995 |
22.33 |
| 28 |
1994 |
21.98 |
| 29 |
1993 |
22.12 |
| 30 |
1992 |
22.01 |
| 31 |
1991 |
21.98 |
| 32 |
1986 |
19.73 |
| 33 |
1985 |
16.78 |
| 34 |
1983 |
15.28 |
| 35 |
1980 |
18.87 |
| 36 |
1978 |
19.13 |
| 37 |
1977 |
18.94 |
| 38 |
1976 |
19.27 |
| 39 |
1975 |
19.66 |
| 40 |
1974 |
21.64 |
| 41 |
1973 |
24.07 |
| 42 |
1972 |
26.17 |
| 43 |
1971 |
27.67 |
