| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 70.76 | 27 |
| 2015 | 70.89 | 27 |
| 2014 | 70.91 | 25 |
| 2013 | 71.14 | 25 |
| 2012 | 72.58 | 22 |
| 2011 | 72.95 | 21 |
| 2010 | 71.76 | 24 |
| 2009 | 71.83 | 23 |
| 2008 | 72.69 | 22 |
| 2007 | 72.83 | 22 |
| 2006 | 72.05 | 23 |
| 2005 | 72.56 | 22 |
| 2004 | 72.38 | 22 |
| 2003 | 71.96 | 23 |
| 2002 | 71.9 | 24 |
| 2001 | 71.41 | 26 |
| 2000 | 71.19 | 26 |
| 1999 | 70.19 | 25 |
| 1998 | 71.13 | 25 |
| 1997 | 74.03 | 19 |
| 1996 | 73.66 | 19 |
| 1995 | 73.22 | 20 |
| 1994 | 72.82 | 20 |
| 1993 | 74.73 | 19 |
| 1992 | 76.75 | 15 |
| 1991 | 77.56 | 14 |