| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 85.05 | 16 |
| 2015 | 85.39 | 15 |
| 2014 | 85.24 | 14 |
| 2013 | 85.35 | 14 |
| 2012 | 85.74 | 15 |
| 2011 | 86.31 | 13 |
| 2010 | 86.96 | 12 |
| 2009 | 86.21 | 16 |
| 2008 | 85.44 | 17 |
| 2007 | 84.84 | 17 |
| 2006 | 84.5 | 20 |
| 2005 | 84.48 | 21 |
| 2004 | 83.64 | 24 |
| 2003 | 83.92 | 23 |
| 2002 | 84.47 | 21 |
| 2001 | 85.47 | 17 |
| 2000 | 86.38 | 15 |
| 1999 | 86.22 | 17 |
| 1998 | 86.18 | 18 |
| 1997 | 86.38 | 18 |
| 1996 | 86.85 | 17 |
| 1995 | 87.47 | 16 |
| 1994 | 87.29 | 18 |
| 1993 | 87.16 | 18 |
| 1992 | 87.19 | 19 |
| 1991 | 87.45 | 19 |
| 1990 | 87.85 | 19 |