| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 92.21 | 22 |
| 2015 | 92.14 | 22 |
| 2014 | 92.08 | 19 |
| 2013 | 92.01 | 19 |
| 2012 | 91.95 | 18 |
| 2011 | 91.89 | 18 |
| 2010 | 91.82 | 18 |
| 2009 | 91.76 | 18 |
| 2008 | 91.7 | 18 |
| 2007 | 91.64 | 18 |
| 2006 | 91.58 | 18 |
| 2005 | 91.52 | 18 |
| 2004 | 91.46 | 18 |
| 2003 | 91.39 | 18 |
| 2002 | 91.33 | 19 |
| 2001 | 91.27 | 19 |
| 2000 | 91.2 | 19 |
| 1999 | 91.14 | 19 |
| 1998 | 91.07 | 19 |
| 1997 | 91.01 | 19 |
| 1996 | 90.94 | 17 |
| 1995 | 90.87 | 17 |
| 1994 | 90.77 | 17 |
| 1993 | 90.67 | 17 |
| 1992 | 90.57 | 16 |
| 1991 | 90.46 | 16 |
| 1990 | 90.36 | 17 |
| 1989 | 90.26 | 17 |
| 1988 | 90.15 | 16 |
| 1987 | 90.04 | 15 |
| 1986 | 89.94 | 13 |