| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 70.659 | 39 |
| 2014 | 70.388 | 44 |
| 2013 | 68.254 | 56 |
| 2012 | 68.72 | 54 |
| 2011 | 68.592 | 53 |
| 2010 | 68.567 | 55 |
| 2009 | 68.603 | 56 |
| 2008 | 68.21 | 53 |
| 2007 | 67.977 | 52 |
| 2006 | 66.564 | 58 |
| 2005 | 66.777 | 53 |
| 2004 | 62.225 | 72 |
| 2003 | 63.229 | 65 |
| 2002 | 61.782 | 70 |
| 2001 | 61.607 | 73 |
| 2000 | 60.642 | 73 |
| 1999 | 58.828 | 73 |
| 1998 | 58.779 | 71 |
| 1997 | 57.688 | 72 |
| 1996 | 55.883 | 75 |
| 1995 | 55.635 | 76 |
| 1994 | 53.516 | 63 |
| 1993 | 54.334 | 57 |
| 1992 | 54.693 | 53 |
| 1991 | 55.085 | 50 |
| 1990 | 55.62 | 43 |
| 1989 | 53.743 | 38 |
| 1988 | 58.789 | 27 |
| 1987 | 55.745 | 31 |
| 1986 | 59.018 | 25 |