| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 17.67 |
| 8 | 2016 | 15.07 |
| 9 | 2015 | 13.93 |
| 10 | 2014 | 13.98 |
| 11 | 2013 | 12.31 |
| 12 | 2012 | 12.49 |
| 13 | 2011 | 11.39 |
| 14 | 2010 | 8.56 |
| 15 | 2009 | 9.08 |
| 16 | 2008 | 9.95 |
| 17 | 2007 | 9.61 |
| 18 | 2006 | 9.52 |
| 19 | 2005 | 7.80 |
| 20 | 2004 | 7.91 |
| 21 | 2003 | 7.44 |
| 22 | 2002 | 6.65 |
| 23 | 2001 | 7.71 |
| 24 | 2000 | 9.53 |
| 25 | 1999 | 7.55 |
| 26 | 1998 | 7.04 |
| 27 | 1997 | 6.42 |
| 28 | 1996 | 8.18 |
| 29 | 1995 | 6.81 |
| 30 | 1994 | 6.95 |
| 31 | 1993 | 6.15 |
| 32 | 1992 | 6.79 |
| 33 | 1991 | 8.07 |
| 34 | 1990 | 11.40 |
| 35 | 1989 | 12.50 |
| 36 | 1988 | 13.62 |
| 37 | 1987 | 14.70 |
| 38 | 1986 | 12.23 |
| 39 | 1985 | 12.75 |
| 40 | 1984 | 12.73 |
| 41 | 1983 | 14.36 |
| 42 | 1982 | 16.31 |
| 43 | 1981 | 13.92 |
| 44 | 1980 | 10.04 |
| 45 | 1979 | 12.88 |
| 46 | 1978 | 13.09 |
| 47 | 1977 | 12.61 |
| 48 | 1976 | 11.34 |
| 49 | 1975 | 13.00 |
| 50 | 1974 | 11.67 |
| 51 | 1973 | 12.40 |
| 52 | 1972 | 12.65 |
| 53 | 1971 | 14.16 |
| 54 | 1965 | 18.31 |
| 55 | 1963 | 37.88 |
| 56 | 1962 | 30.73 |
| 57 | 1961 | 17.22 |
| 58 | 1960 | 26.18 |
| 59 | 1958 | 32.45 |
| 60 | 1957 | 45.05 |
| 61 | 1956 | 39.27 |
| 62 | 1954 | 46.12 |
| 63 | 1952 | 41.22 |
| 64 | 1950 | 25.98 |
