| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2021 | |
| 3 | 2020 | |
| 4 | 2019 | |
| 5 | 2018 | |
| 6 | 2017 | |
| 7 | 2016 | 7.58 |
| 8 | 2015 | 6.12 |
| 9 | 2014 | 6.33 |
| 10 | 2013 | 7.58 |
| 11 | 2012 | 7.61 |
| 12 | 2011 | 6.60 |
| 13 | 2010 | 6.53 |
| 14 | 2009 | 6.68 |
| 15 | 2008 | 6.88 |
| 16 | 2007 | 6.87 |
| 17 | 2006 | 7.15 |
| 18 | 2005 | 6.95 |
| 19 | 2004 | 6.66 |
| 20 | 2003 | 7.52 |
| 21 | 2002 | 7.67 |
| 22 | 2001 | 7.74 |
| 23 | 2000 | 7.58 |
| 24 | 1999 | 7.23 |
| 25 | 1998 | 9.11 |
| 26 | 1997 | 12.79 |
| 27 | 1996 | 16.02 |
| 28 | 1995 | 16.24 |
| 29 | 1994 | 13.44 |
| 30 | 1993 | 13.60 |
| 31 | 1992 | 13.83 |
| 32 | 1991 | 14.33 |
| 33 | 1990 | 12.27 |
| 34 | 1989 | 9.16 |
| 35 | 1988 | 9.75 |
| 36 | 1987 | 11.83 |
