| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 91.09 | 3 |
| 2015 | 91.56 | 3 |
| 2014 | 91.41 | 3 |
| 2013 | 91.38 | 3 |
| 2012 | 91.42 | 3 |
| 2011 | 91.41 | 3 |
| 2010 | 91.26 | 3 |
| 2009 | 90.18 | 6 |
| 2008 | 89.69 | 7 |
| 2007 | 89.57 | 8 |
| 2006 | 89.99 | 7 |
| 2005 | 91.23 | 3 |
| 2004 | 90.56 | 6 |
| 2003 | 90.12 | 6 |
| 2002 | 90.09 | 6 |
| 2001 | 90.57 | 5 |
| 2000 | 91.67 | 3 |
| 1999 | 91.25 | 4 |
| 1998 | 90.96 | 5 |
| 1997 | 91.02 | 5 |
| 1996 | 91.49 | 4 |
| 1995 | 92.31 | 4 |
| 1994 | 91.91 | 4 |
| 1993 | 91.47 | 4 |
| 1992 | 91.12 | 7 |
| 1991 | 91.01 | 7 |
| 1990 | 91.25 | 6 |