| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2019 | |
| 2 | 2018 | |
| 3 | 2017 | |
| 4 | 2016 | |
| 5 | 2015 | |
| 6 | 2014 | |
| 7 | 2013 | |
| 8 | 2012 | |
| 9 | 2011 | |
| 10 | 2010 | |
| 11 | 2009 | 13.14 |
| 12 | 2008 | 14.74 |
| 13 | 2007 | 15.34 |
| 14 | 2006 | 9.07 |
| 15 | 2005 | 10.37 |
| 16 | 2004 | 9.41 |
| 17 | 2003 | 7.97 |
| 18 | 2002 | 6.90 |
| 19 | 2001 | 6.89 |
| 20 | 2000 | 17.09 |
| 21 | 1999 | 7.52 |
| 22 | 1998 | 3.71 |
| 23 | 1997 | 6.55 |
| 24 | 1996 | 5.88 |
| 25 | 1995 | 5.64 |
| 26 | 1994 | 5.80 |
