| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2025 | |
| 2 | 2024 | |
| 3 | 2023 | |
| 4 | 2022 | |
| 5 | 2021 | |
| 6 | 2020 | |
| 7 | 2019 | 7.31 |
| 8 | 2018 | 7.21 |
| 9 | 2017 | 7.21 |
| 10 | 2016 | 7.20 |
| 11 | 2015 | 7.12 |
| 12 | 2014 | 7.08 |
| 13 | 2013 | 7.06 |
| 14 | 2012 | 7.03 |
| 15 | 2011 | 7.02 |
| 16 | 2010 | 7.12 |
| 17 | 2009 | 7.48 |
| 18 | 2008 | 7.80 |
| 19 | 2007 | 7.81 |
| 20 | 2006 | 7.82 |
| 21 | 2005 | 7.76 |
| 22 | 2004 | 7.77 |
| 23 | 2003 | 7.78 |
| 24 | 2002 | 7.87 |
| 25 | 2001 | 7.80 |
| 26 | 2000 | 7.72 |
| 27 | 1999 | 6.04 |
| 28 | 1998 | 6.97 |
| 29 | 1997 | 8.47 |
| 30 | 1996 | 7.72 |
| 31 | 1995 | 6.62 |
| 32 | 1994 | 6.37 |
| 33 | 1993 | 6.57 |
| 34 | 1992 | 6.77 |
| 35 | 1991 | 6.39 |
| 36 | 1990 | 7.35 |
| 37 | 1989 | 6.82 |
| 38 | 1988 | 7.70 |
| 39 | 1987 | 5.57 |
| 40 | 1986 | 5.24 |
| 41 | 1985 | 5.88 |
| 42 | 1984 | 5.71 |
| 43 | 1983 | 6.15 |
| 44 | 1982 | 7.00 |
| 45 | 1981 | 7.25 |
| 46 | 1980 | 6.32 |
| 47 | 1979 | 8.08 |
| 48 | 1978 | 7.41 |
