| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2021 |
|
| 2 |
2020 |
|
| 3 |
2019 |
|
| 4 |
2018 |
|
| 5 |
2017 |
|
| 6 |
2016 |
|
| 7 |
2015 |
|
| 8 |
2014 |
|
| 9 |
2013 |
|
| 10 |
2012 |
|
| 11 |
2011 |
7.65 |
| 12 |
2010 |
7.83 |
| 13 |
2009 |
6.99 |
| 14 |
2008 |
7.05 |
| 15 |
2007 |
7.26 |
| 16 |
2006 |
6.70 |
| 17 |
2005 |
7.36 |
| 18 |
2004 |
7.77 |
| 19 |
2003 |
7.02 |
| 20 |
2002 |
7.66 |
| 21 |
2001 |
7.49 |
| 22 |
2000 |
9.43 |
| 23 |
1999 |
8.14 |
| 24 |
1998 |
10.09 |
| 25 |
1997 |
8.68 |
| 26 |
1996 |
10.76 |
| 27 |
1995 |
10.67 |
| 28 |
1994 |
10.71 |
| 29 |
1993 |
11.17 |
| 30 |
1992 |
11.27 |
| 31 |
1991 |
13.23 |
| 32 |
1990 |
17.07 |
| 33 |
1989 |
16.49 |
| 34 |
1988 |
16.71 |
| 35 |
1987 |
16.67 |
| 36 |
1986 |
14.31 |
| 37 |
1985 |
10.20 |
| 38 |
1984 |
8.32 |
| 39 |
1983 |
9.78 |
| 40 |
1982 |
15.30 |
| 41 |
1981 |
15.91 |
| 42 |
1980 |
12.63 |
| 43 |
1979 |
15.06 |
| 44 |
1978 |
15.87 |
| 45 |
1977 |
16.61 |
| 46 |
1976 |
16.04 |
| 47 |
1975 |
16.37 |
| 48 |
1970 |
25.68 |
| 49 |
1965 |
30.79 |
| 50 |
1962 |
32.72 |
| 51 |
1957 |
36.44 |
| 52 |
1952 |
33.81 |
