| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 31.65 |
| 8 | 2017 | 19.77 |
| 9 | 2016 | 17.58 |
| 10 | 2015 | 12.52 |
| 11 | 2014 | 17.81 |
| 12 | 2013 | 17.26 |
| 13 | 2012 | 16.66 |
| 14 | 2011 | 23.09 |
| 15 | 2010 | 21.23 |
| 16 | 2009 | 23.21 |
| 17 | 2008 | 27.30 |
| 18 | 2007 | 29.50 |
| 19 | 2006 | 45.20 |
| 20 | 2005 | 28.04 |
| 21 | 2004 | 21.33 |
| 22 | 2003 | 20.97 |
| 23 | 2002 | 16.00 |
| 24 | 2001 | 16.90 |
| 25 | 2000 | 26.60 |
| 26 | 1999 | 14.26 |
| 27 | 1998 | 20.23 |
| 28 | 1997 | 28.34 |
| 29 | 1996 | 19.58 |
| 30 | 1995 | 24.91 |
| 31 | 1994 | 31.05 |
| 32 | 1993 | 29.10 |
| 33 | 1992 | 19.20 |
| 34 | 1991 | 37.36 |
| 35 | 1990 | 23.60 |
| 36 | 1989 | 22.41 |
| 37 | 1988 | 20.98 |
