| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 75.32 | 28 |
| 2015 | 75.31 | 28 |
| 2014 | 75.28 | 28 |
| 2013 | 75.27 | 28 |
| 2012 | 75.24 | 27 |
| 2011 | 75.2 | 26 |
| 2010 | 75.03 | 26 |
| 2009 | 75 | 26 |
| 2008 | 74.86 | 27 |
| 2007 | 76.48 | 25 |
| 2006 | 78.02 | 20 |
| 2005 | 79.48 | 17 |
| 2004 | 79.46 | 17 |
| 2003 | 79.43 | 18 |
| 2002 | 79.4 | 17 |
| 2001 | 79.34 | 15 |
| 2000 | 79.29 | 15 |
| 1999 | 79.23 | 15 |
| 1998 | 79.19 | 14 |
| 1997 | 79.12 | 15 |
| 1996 | 79.13 | 16 |
| 1995 | 79.18 | 17 |
| 1994 | 79.24 | 17 |
| 1993 | 79.2 | 17 |
| 1992 | 79.35 | 16 |
| 1991 | 79.42 | 18 |
| 1990 | 79.5 | 18 |