| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 85.28 | 9 |
| 2015 | 85.79 | 8 |
| 2014 | 86.15 | 8 |
| 2013 | 86.28 | 8 |
| 2012 | 86.12 | 8 |
| 2011 | 86.18 | 8 |
| 2010 | 86.45 | 9 |
| 2009 | 86.33 | 8 |
| 2008 | 86.12 | 9 |
| 2007 | 86.23 | 8 |
| 2006 | 86.61 | 9 |
| 2005 | 86.61 | 7 |
| 2004 | 86.32 | 10 |
| 2003 | 86.92 | 7 |
| 2002 | 87.08 | 6 |
| 2001 | 86.58 | 6 |
| 2000 | 86.29 | 7 |
| 1999 | 87.58 | 6 |
| 1998 | 87.68 | 6 |
| 1997 | 85.5 | 15 |
| 1996 | 87.01 | 8 |
| 1995 | 87.64 | 8 |
| 1994 | 87.39 | 8 |
| 1993 | 87.11 | 13 |
| 1992 | 86.3 | 14 |
| 1991 | 86.28 | 15 |