| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 8.13 |
| 8 | 2017 | 9.58 |
| 9 | 2016 | 7.94 |
| 10 | 2015 | 9.17 |
| 11 | 2014 | 9.14 |
| 12 | 2013 | 8.79 |
| 13 | 2012 | 8.27 |
| 14 | 2011 | 7.50 |
| 15 | 2010 | 8.29 |
| 16 | 2009 | 7.62 |
| 17 | 2008 | 7.69 |
| 18 | 2007 | 7.62 |
| 19 | 2006 | 7.40 |
| 20 | 2005 | 6.05 |
| 21 | 2004 | 6.70 |
| 22 | 2003 | 6.60 |
| 23 | 2002 | 6.65 |
| 24 | 2001 | 6.47 |
| 25 | 2000 | 7.86 |
| 26 | 1999 | 6.91 |
| 27 | 1998 | 7.80 |
| 28 | 1997 | 8.02 |
| 29 | 1996 | 8.30 |
| 30 | 1995 | 9.62 |
| 31 | 1994 | 10.15 |
| 32 | 1993 | 11.21 |
| 33 | 1992 | 11.50 |
| 34 | 1991 | 12.66 |
| 35 | 1990 | 18.58 |
| 36 | 1989 | 18.76 |
| 37 | 1988 | 18.43 |
| 38 | 1987 | 19.10 |
| 39 | 1986 | 18.16 |
| 40 | 1985 | 15.03 |
| 41 | 1984 | 13.54 |
| 42 | 1983 | 14.71 |
| 43 | 1982 | 17.15 |
| 44 | 1981 | 16.19 |
| 45 | 1980 | 14.79 |
| 46 | 1979 | 19.36 |
| 47 | 1978 | 17.22 |
| 48 | 1977 | 17.74 |
| 49 | 1976 | 17.94 |
| 50 | 1975 | 18.72 |
| 51 | 1970 | 28.14 |
| 52 | 1965 | 35.24 |
| 53 | 1962 | 42.53 |
| 54 | 1957 | 35.66 |
| 55 | 1955 | 32.60 |
