| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 73.68 | 1 |
| 2015 | 74.08 | 1 |
| 2014 | 74.52 | 1 |
| 2013 | 75.02 | 1 |
| 2012 | 75.26 | 1 |
| 2011 | 74.84 | 2 |
| 2010 | 74.59 | 2 |
| 2009 | 73.51 | 3 |
| 2008 | 71.18 | 7 |
| 2007 | 69.87 | 9 |
| 2006 | 70.14 | 8 |
| 2005 | 72.04 | 7 |
| 2004 | 70.65 | 7 |
| 2003 | 69.26 | 9 |
| 2002 | 68.72 | 10 |
| 2001 | 68.76 | 10 |
| 2000 | 68.66 | 9 |
| 1999 | 72.95 | 6 |
| 1998 | 72.6 | 6 |
| 1997 | 71.58 | 8 |
| 1996 | 72.43 | 8 |
| 1995 | 71.34 | 9 |
| 1994 | 69.31 | 13 |
| 1993 | 71.97 | 10 |
| 1992 | 72.06 | 8 |
| 1991 | 69.12 | 14 |