| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 60.27 | 72 |
| 2015 | 60.31 | 76 |
| 2014 | 60.2 | 76 |
| 2013 | 59.24 | 82 |
| 2012 | 59.47 | 78 |
| 2011 | 59.72 | 75 |
| 2010 | 59.33 | 78 |
| 2009 | 59.87 | 74 |
| 2008 | 60.76 | 73 |
| 2007 | 60.12 | 73 |
| 2006 | 59.46 | 74 |
| 2005 | 58.89 | 76 |
| 2004 | 57.26 | 93 |
| 2003 | 56.8 | 93 |
| 2002 | 57.97 | 83 |
| 2001 | 58.97 | 76 |
| 2000 | 56.99 | 90 |
| 1999 | 56.61 | 94 |
| 1998 | 58.42 | 81 |
| 1997 | 57.74 | 86 |
| 1996 | 55.45 | 102 |
| 1995 | 55.42 | 105 |
| 1994 | 54.12 | 110 |
| 1993 | 54.08 | 113 |
| 1992 | 54.89 | 110 |
| 1991 | 54.4 | 114 |