| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 71.17 | 5 |
| 2015 | 71.73 | 4 |
| 2014 | 72.02 | 4 |
| 2013 | 72.63 | 4 |
| 2012 | 71.77 | 6 |
| 2011 | 72.61 | 4 |
| 2010 | 72.81 | 4 |
| 2009 | 73.01 | 5 |
| 2008 | 73.13 | 4 |
| 2007 | 73.27 | 4 |
| 2006 | 73.45 | 4 |
| 2005 | 73.48 | 5 |
| 2004 | 73.45 | 6 |
| 2003 | 72.72 | 5 |
| 2002 | 71.91 | 6 |
| 2001 | 71.05 | 7 |
| 2000 | 73.02 | 4 |
| 1999 | 69.53 | 8 |
| 1998 | 70.75 | 8 |
| 1997 | 71.85 | 7 |
| 1996 | 72.81 | 6 |
| 1995 | 72.84 | 7 |
| 1994 | 72.81 | 7 |
| 1993 | 72.74 | 7 |
| 1992 | 72.44 | 7 |
| 1991 | 72.33 | 7 |