| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 86.57 | 5 |
| 2015 | 86.53 | 6 |
| 2014 | 86.5 | 7 |
| 2013 | 86.48 | 7 |
| 2012 | 86.97 | 6 |
| 2011 | 88.56 | 2 |
| 2010 | 88.22 | 4 |
| 2009 | 87.11 | 7 |
| 2008 | 86.56 | 7 |
| 2007 | 86.71 | 7 |
| 2006 | 85.56 | 11 |
| 2005 | 84.64 | 12 |
| 2004 | 83.78 | 13 |
| 2003 | 83.77 | 13 |
| 2002 | 83.49 | 15 |
| 2001 | 83.08 | 16 |
| 2000 | 81.75 | 20 |
| 1999 | 80.72 | 25 |
| 1998 | 82.4 | 21 |
| 1997 | 83.18 | 20 |
| 1996 | 83.31 | 20 |
| 1995 | 83.28 | 21 |
| 1994 | 82.96 | 21 |
| 1993 | 84.11 | 19 |
| 1992 | 84.01 | 20 |
| 1991 | 83.39 | 20 |