| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 73.305 | 20 |
| 2015 | 72.683 | 31 |
| 2014 | 71.182 | 39 |
| 2013 | 69.873 | 48 |
| 2012 | 69.069 | 53 |
| 2011 | 67.717 | 58 |
| 2010 | 67.783 | 58 |
| 2009 | 69.175 | 53 |
| 2008 | 67.258 | 57 |
| 2007 | 67.699 | 54 |
| 2006 | 67.18 | 54 |
| 2005 | 66.05 | 57 |
| 2004 | 64.694 | 56 |
| 2003 | 65.832 | 54 |
| 2002 | 67.216 | 47 |
| 2001 | 67.775 | 41 |
| 2000 | 67.728 | 40 |
| 1999 | 69.522 | 29 |
| 1998 | 69.463 | 27 |
| 1997 | 68.96 | 29 |
| 1996 | 68.993 | 28 |
| 1995 | 66.703 | 33 |
| 1994 | 50.147 | 80 |
| 1993 | 50.83 | 70 |
| 1992 | 53.58 | 55 |
| 1991 | 56.05 | 46 |
| 1990 | 53.21 | 49 |
| 1989 | 48.81 | 58 |
| 1988 | 46.238 | 63 |
| 1987 | 44.11 | 71 |
| 1986 | 43.682 | 76 |