| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2016 | |
| 6 | 2015 | |
| 7 | 2014 | 49.60 |
| 8 | 2013 | 51.74 |
| 9 | 2012 | 51.10 |
| 10 | 2011 | 52.91 |
| 11 | 2010 | 53.28 |
| 12 | 2009 | 54.23 |
| 13 | 2008 | 54.73 |
| 14 | 2007 | 55.29 |
| 15 | 2006 | 56.01 |
| 16 | 2005 | 57.71 |
| 17 | 2004 | 58.66 |
| 18 | 2003 | 60.74 |
| 19 | 2002 | 61.74 |
| 20 | 2001 | 62.08 |
| 21 | 2000 | 63.35 |
| 22 | 1999 | 64.13 |
| 23 | 1998 | 64.68 |
| 24 | 1997 | 66.89 |
| 25 | 1996 | 69.16 |
| 26 | 1995 | 70.34 |
| 27 | 1994 | 71.24 |
| 28 | 1993 | 73.33 |
| 29 | 1992 | 73.86 |
| 30 | 1991 | 76.35 |
| 31 | 1990 | 77.11 |
