| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2016 | |
| 6 | 2015 | |
| 7 | 2014 | 16.35 |
| 8 | 2013 | 5.95 |
| 9 | 2012 | 3.40 |
| 10 | 2011 | 4.90 |
| 11 | 2010 | 7.24 |
| 12 | 2009 | 4.86 |
| 13 | 2008 | 3.32 |
| 14 | 2007 | 3.58 |
| 15 | 2006 | 3.97 |
| 16 | 2005 | 4.32 |
| 17 | 2004 | 4.99 |
| 18 | 2003 | 3.24 |
| 19 | 2002 | 4.34 |
| 20 | 2001 | 4.47 |
| 21 | 2000 | 4.68 |
| 22 | 1999 | 4.51 |
| 23 | 1998 | 5.57 |
| 24 | 1997 | 4.94 |
| 25 | 1996 | 4.29 |
| 26 | 1995 | 3.83 |
| 27 | 1994 | 3.32 |
| 28 | 1993 | 3.63 |
| 29 | 1992 | 4.93 |
| 30 | 1991 | 10.66 |
| 31 | 1990 | 20.08 |
| 32 | 1989 | 13.36 |
| 33 | 1988 | 12.00 |
| 34 | 1987 | 11.79 |
| 35 | 1986 | 8.85 |
| 36 | 1985 | 5.85 |
| 37 | 1984 | 6.96 |
| 38 | 1983 | 6.89 |
| 39 | 1982 | 10.95 |
| 40 | 1981 | 10.07 |
| 41 | 1980 | 7.51 |
| 42 | 1979 | 10.79 |
| 43 | 1978 | 10.30 |
| 44 | 1977 | 9.72 |
| 45 | 1976 | 10.83 |
| 46 | 1975 | 14.03 |
| 47 | 1974 | 13.72 |
| 48 | 1973 | 16.95 |
| 49 | 1972 | 19.94 |
| 50 | 1971 | 21.20 |
| 51 | 1970 | 26.55 |
| 52 | 1969 | 23.80 |
| 53 | 1968 | 30.00 |
| 54 | 1967 | 21.00 |
| 55 | 1966 | 24.60 |
| 56 | 1965 | 25.30 |
| 57 | 1964 | 34.90 |
| 58 | 1963 | 32.40 |
| 59 | 1962 | 25.70 |
| 60 | 1961 | 3.00 |
| 61 | 1960 | 4.10 |
| 62 | 1959 | 2.70 |
| 63 | 1958 | 12.20 |
| 64 | 1957 | 23.70 |
| 65 | 1956 | 20.60 |
| 66 | 1955 | 23.60 |
| 67 | 1954 | 26.00 |
| 68 | 1953 | 20.50 |
| 69 | 1952 | 19.30 |
| 70 | 1949 | 15.90 |
