| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2024 |
|
| 2 |
2023 |
|
| 3 |
2022 |
|
| 4 |
2021 |
|
| 5 |
2019 |
|
| 6 |
2018 |
|
| 7 |
2017 |
|
| 8 |
2016 |
|
| 9 |
2015 |
|
| 10 |
2014 |
|
| 11 |
2013 |
2.59 |
| 12 |
2012 |
4.30 |
| 13 |
2011 |
4.20 |
| 14 |
2010 |
2.19 |
| 15 |
2009 |
4.27 |
| 16 |
2008 |
4.29 |
| 17 |
2007 |
4.42 |
| 18 |
2006 |
4.28 |
| 19 |
2005 |
5.52 |
| 20 |
2004 |
4.22 |
| 21 |
2003 |
4.46 |
| 22 |
2002 |
4.53 |
| 23 |
2001 |
4.54 |
| 24 |
2000 |
5.67 |
| 25 |
1999 |
4.76 |
| 26 |
1998 |
3.97 |
| 27 |
1997 |
5.13 |
| 28 |
1996 |
5.47 |
| 29 |
1995 |
5.47 |
| 30 |
1994 |
5.61 |
| 31 |
1993 |
6.38 |
| 32 |
1992 |
5.66 |
| 33 |
1991 |
5.47 |
| 34 |
1990 |
6.25 |
| 35 |
1989 |
6.38 |
| 36 |
1988 |
6.79 |
| 37 |
1987 |
7.28 |
| 38 |
1986 |
6.57 |
| 39 |
1985 |
5.65 |
| 40 |
1984 |
6.74 |
| 41 |
1983 |
9.05 |
| 42 |
1982 |
11.77 |
| 43 |
1981 |
9.78 |
| 44 |
1980 |
9.40 |
| 45 |
1979 |
10.41 |
| 46 |
1978 |
11.30 |
| 47 |
1977 |
12.67 |
| 48 |
1976 |
14.47 |
| 49 |
1975 |
16.62 |
| 50 |
1974 |
17.08 |
| 51 |
1973 |
20.66 |
| 52 |
1972 |
20.47 |
| 53 |
1971 |
20.93 |
| 54 |
1970 |
21.88 |
| 55 |
1969 |
24.91 |
| 56 |
1968 |
23.62 |
| 57 |
1967 |
24.68 |
| 58 |
1966 |
28.07 |
| 59 |
1965 |
29.31 |
| 60 |
1964 |
29.28 |
| 61 |
1963 |
32.13 |
| 62 |
1962 |
27.02 |
| 63 |
1961 |
9.67 |
| 64 |
1960 |
11.34 |
| 65 |
1959 |
17.49 |
| 66 |
1958 |
19.67 |
| 67 |
1957 |
22.62 |
| 68 |
1956 |
22.50 |
| 69 |
1955 |
21.40 |
| 70 |
1954 |
33.07 |
| 71 |
1953 |
22.87 |
| 72 |
1952 |
24.51 |
| 73 |
1951 |
20.96 |
| 74 |
1950 |
10.47 |
| 75 |
1949 |
10.47 |
