| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | |
| 8 | 2014 | |
| 9 | 2013 | |
| 10 | 2012 | |
| 11 | 2011 | 7.59 |
| 12 | 2010 | 7.78 |
| 13 | 2009 | 8.76 |
| 14 | 2008 | 9.21 |
| 15 | 2007 | 9.85 |
| 16 | 2006 | 9.18 |
| 17 | 2005 | 10.57 |
| 18 | 2004 | 9.53 |
| 19 | 2003 | 9.30 |
| 20 | 2002 | 9.12 |
| 21 | 2001 | 9.44 |
| 22 | 2000 | 10.11 |
| 23 | 1999 | 11.23 |
| 24 | 1998 | 13.31 |
| 25 | 1997 | 12.91 |
| 26 | 1996 | 12.43 |
| 27 | 1995 | 13.72 |
| 28 | 1994 | 15.39 |
| 29 | 1993 | 16.10 |
| 30 | 1992 | 17.65 |
| 31 | 1991 | 17.05 |
| 32 | 1990 | 20.71 |
| 33 | 1985 | 16.86 |
| 34 | 1980 | 14.07 |
| 35 | 1978 | 17.64 |
| 36 | 1975 | 23.70 |
| 37 | 1970 | 36.04 |
| 38 | 1965 | 40.47 |
| 39 | 1962 | 33.79 |
| 40 | 1957 | 33.01 |
