| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2020 |
|
| 2 |
2019 |
|
| 3 |
2018 |
|
| 4 |
2017 |
|
| 5 |
2016 |
|
| 6 |
2015 |
|
| 7 |
2014 |
22.74 |
| 8 |
2013 |
12.19 |
| 9 |
2012 |
11.74 |
| 10 |
2011 |
11.97 |
| 11 |
2010 |
15.82 |
| 12 |
2009 |
10.96 |
| 13 |
2008 |
10.13 |
| 14 |
2007 |
10.05 |
| 15 |
2006 |
9.59 |
| 16 |
2005 |
10.17 |
| 17 |
2004 |
10.59 |
| 18 |
2003 |
9.31 |
| 19 |
2002 |
10.20 |
| 20 |
2001 |
9.93 |
| 21 |
2000 |
11.38 |
| 22 |
1999 |
10.23 |
| 23 |
1998 |
11.52 |
| 24 |
1997 |
10.84 |
| 25 |
1996 |
10.33 |
| 26 |
1995 |
9.66 |
| 27 |
1994 |
9.31 |
| 28 |
1993 |
9.47 |
| 29 |
1992 |
10.95 |
| 30 |
1991 |
16.39 |
| 31 |
1990 |
26.10 |
| 32 |
1989 |
18.87 |
| 33 |
1988 |
17.95 |
| 34 |
1987 |
17.43 |
| 35 |
1986 |
14.71 |
| 36 |
1985 |
11.75 |
| 37 |
1984 |
12.99 |
| 38 |
1983 |
12.76 |
| 39 |
1982 |
17.05 |
| 40 |
1981 |
16.48 |
| 41 |
1980 |
13.91 |
| 42 |
1979 |
16.94 |
| 43 |
1978 |
16.80 |
| 44 |
1977 |
16.96 |
| 45 |
1976 |
18.46 |
| 46 |
1975 |
21.56 |
| 47 |
1974 |
20.95 |
| 48 |
1973 |
23.89 |
| 49 |
1972 |
27.60 |
| 50 |
1971 |
29.01 |
| 51 |
1970 |
33.89 |
| 52 |
1969 |
30.40 |
| 53 |
1968 |
38.00 |
| 54 |
1967 |
30.00 |
| 55 |
1966 |
34.50 |
| 56 |
1965 |
35.50 |
| 57 |
1964 |
36.90 |
| 58 |
1963 |
44.20 |
| 59 |
1962 |
38.10 |
| 60 |
1961 |
21.40 |
| 61 |
1960 |
19.50 |
| 62 |
1959 |
20.90 |
| 63 |
1958 |
25.00 |
| 64 |
1957 |
35.80 |
| 65 |
1956 |
32.70 |
| 66 |
1955 |
37.30 |
| 67 |
1954 |
37.70 |
| 68 |
1953 |
32.60 |
| 69 |
1952 |
31.50 |
| 70 |
1949 |
28.10 |
