| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 6.89 |
| 8 | 2017 | 6.87 |
| 9 | 2016 | 6.22 |
| 10 | 2015 | 5.22 |
| 11 | 2014 | 4.93 |
| 12 | 2013 | 4.52 |
| 13 | 2012 | 3.88 |
| 14 | 2011 | 4.28 |
| 15 | 2010 | 3.22 |
| 16 | 2009 | 3.45 |
| 17 | 2008 | 3.26 |
| 18 | 2007 | 2.74 |
| 19 | 2006 | 2.44 |
| 20 | 2005 | 1.76 |
| 21 | 2004 | 1.65 |
| 22 | 2003 | 1.36 |
| 23 | 2002 | 1.66 |
| 24 | 2001 | 1.29 |
| 25 | 2000 | 1.37 |
| 26 | 1999 | 1.21 |
| 27 | 1998 | 1.16 |
| 28 | 1997 | 1.16 |
| 29 | 1996 | 1.09 |
| 30 | 1995 | 1.00 |
| 31 | 1990 | 0.84 |
| 32 | 1985 | 0.43 |
