| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 74.26 | 12 |
| 2015 | 73.98 | 12 |
| 2014 | 73.59 | 12 |
| 2013 | 72.82 | 13 |
| 2012 | 72.53 | 13 |
| 2011 | 72.4 | 13 |
| 2010 | 74.3 | 13 |
| 2009 | 74.12 | 13 |
| 2008 | 75.54 | 9 |
| 2007 | 76.82 | 9 |
| 2006 | 77.85 | 6 |
| 2005 | 78.88 | 5 |
| 2004 | 79.91 | 5 |
| 2003 | 76.87 | 8 |
| 2002 | 73.24 | 11 |
| 2001 | 69.27 | 16 |
| 2000 | 65.78 | 22 |
| 1999 | 61.01 | 30 |
| 1998 | 62.49 | 29 |
| 1997 | 64.03 | 28 |
| 1996 | 64.31 | 26 |
| 1995 | 64.61 | 26 |
| 1994 | 64.84 | 25 |
| 1993 | 64.29 | 26 |
| 1992 | 64.27 | 25 |
| 1991 | 64.22 | 25 |