| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2018 | |
| 2 | 2017 | |
| 3 | 2016 | |
| 4 | 2015 | |
| 5 | 2014 | |
| 6 | 2013 | |
| 7 | 2012 | 11.42 |
| 8 | 2011 | 10.34 |
| 9 | 2010 | 10.58 |
| 10 | 2009 | 11.69 |
| 11 | 2008 | 11.74 |
| 12 | 2007 | 11.78 |
| 13 | 2006 | 12.72 |
| 14 | 2005 | 12.93 |
| 15 | 2004 | 14.97 |
| 16 | 2003 | 14.50 |
| 17 | 2002 | 14.46 |
| 18 | 2001 | 14.06 |
| 19 | 2000 | 14.56 |
| 20 | 1999 | 7.43 |
| 21 | 1998 | 3.52 |
| 22 | 1997 | 11.59 |
| 23 | 1996 | 9.24 |
| 24 | 1995 | 10.20 |
| 25 | 1994 | 9.34 |
| 26 | 1993 | 9.45 |
| 27 | 1992 | 12.46 |
| 28 | 1991 | 15.21 |
| 29 | 1990 | 21.31 |
| 30 | 1989 | 17.07 |
