| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 3.50 |
| 8 | 2017 | 3.40 |
| 9 | 2016 | 3.30 |
| 10 | 2015 | 3.30 |
| 11 | 2014 | 5.60 |
| 12 | 2013 | 5.80 |
| 13 | 2012 | 4.50 |
| 14 | 2011 | 4.00 |
| 15 | 2010 | 3.70 |
| 16 | 2009 | 4.10 |
| 17 | 2008 | 3.40 |
| 18 | 2007 | 2.80 |
| 19 | 2006 | 6.80 |
| 20 | 2005 | 9.50 |
| 21 | 2004 | 4.70 |
| 22 | 2003 | 4.50 |
| 23 | 2002 | 5.14 |
| 24 | 2001 | 7.21 |
| 25 | 2000 | 8.07 |
| 26 | 1999 | 7.62 |
| 27 | 1998 | 7.61 |
| 28 | 1997 | 6.48 |
| 29 | 1996 | 7.97 |
| 30 | 1995 | 5.39 |
| 31 | 1994 | 4.57 |
| 32 | 1993 | 3.60 |
| 33 | 1992 | 8.28 |
| 34 | 1991 | 9.44 |
| 35 | 1990 | 8.49 |
| 36 | 1985 | 13.04 |
| 37 | 1980 | 25.47 |
| 38 | 1978 | 11.90 |
