| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2024 |
|
| 2 |
2023 |
|
| 3 |
2022 |
|
| 4 |
2021 |
|
| 5 |
2020 |
|
| 6 |
2019 |
|
| 7 |
2018 |
7.87 |
| 8 |
2017 |
9.08 |
| 9 |
2016 |
9.74 |
| 10 |
2015 |
7.69 |
| 11 |
2014 |
10.98 |
| 12 |
2013 |
9.11 |
| 13 |
2012 |
9.52 |
| 14 |
2011 |
8.98 |
| 15 |
2010 |
10.56 |
| 16 |
2009 |
8.00 |
| 17 |
2008 |
7.97 |
| 18 |
2007 |
9.70 |
| 19 |
2006 |
7.45 |
| 20 |
2005 |
7.75 |
| 21 |
2004 |
8.52 |
| 22 |
2003 |
7.25 |
| 23 |
2002 |
11.53 |
| 24 |
2001 |
11.74 |
| 25 |
2000 |
16.37 |
| 26 |
1999 |
13.63 |
| 27 |
1998 |
13.59 |
| 28 |
1997 |
14.72 |
| 29 |
1996 |
14.90 |
| 30 |
1995 |
14.70 |
| 31 |
1994 |
15.80 |
| 32 |
1993 |
16.11 |
| 33 |
1992 |
18.39 |
| 34 |
1991 |
16.08 |
| 35 |
1990 |
18.41 |
| 36 |
1989 |
16.49 |
| 37 |
1988 |
16.70 |
| 38 |
1987 |
16.47 |
| 39 |
1986 |
15.37 |
| 40 |
1985 |
13.14 |
| 41 |
1984 |
17.80 |
| 42 |
1983 |
12.36 |
| 43 |
1982 |
16.02 |
| 44 |
1981 |
13.11 |
| 45 |
1980 |
11.37 |
| 46 |
1979 |
12.29 |
| 47 |
1978 |
14.22 |
| 48 |
1977 |
15.42 |
| 49 |
1976 |
17.19 |
| 50 |
1975 |
19.31 |
| 51 |
1974 |
20.18 |
| 52 |
1973 |
24.98 |
| 53 |
1972 |
26.97 |
| 54 |
1971 |
27.10 |
| 55 |
1970 |
29.03 |
| 56 |
1969 |
31.47 |
| 57 |
1968 |
33.64 |
| 58 |
1967 |
28.18 |
| 59 |
1966 |
27.80 |
| 60 |
1962 |
41.48 |
| 61 |
1957 |
46.23 |
| 62 |
1952 |
35.55 |
| 63 |
1949 |
32.42 |
