| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 73.46 | 2 |
| 2015 | 73.51 | 2 |
| 2014 | 73.47 | 2 |
| 2013 | 73.62 | 2 |
| 2012 | 73.78 | 2 |
| 2011 | 73.93 | 3 |
| 2010 | 74.05 | 3 |
| 2009 | 74.19 | 2 |
| 2008 | 74.27 | 1 |
| 2007 | 74.36 | 3 |
| 2006 | 75.66 | 3 |
| 2005 | 73.61 | 4 |
| 2004 | 74.64 | 5 |
| 2003 | 75.7 | 2 |
| 2002 | 74.65 | 3 |
| 2001 | 75.76 | 1 |
| 2000 | 75.35 | 3 |
| 1999 | 75.68 | 3 |
| 1998 | 75.72 | 3 |
| 1997 | 75.95 | 4 |
| 1996 | 75.86 | 4 |
| 1995 | 75.75 | 4 |
| 1994 | 75.76 | 5 |
| 1993 | 75.13 | 6 |
| 1992 | 76.15 | 5 |
| 1991 | 75.67 | 6 |