| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 41.15 | 129 |
| 2015 | 40.97 | 132 |
| 2014 | 40.63 | 132 |
| 2013 | 39.85 | 133 |
| 2012 | 39.95 | 133 |
| 2011 | 39.83 | 133 |
| 2010 | 39.73 | 135 |
| 2009 | 40.42 | 130 |
| 2008 | 42.84 | 120 |
| 2007 | 43.48 | 112 |
| 2006 | 44.22 | 102 |
| 2005 | 44.97 | 97 |
| 2004 | 46.72 | 87 |
| 2003 | 48.26 | 73 |
| 2002 | 50.06 | 68 |
| 2001 | 51.27 | 64 |
| 2000 | 52.47 | 56 |
| 1999 | 50.97 | 62 |
| 1998 | 53.2 | 51 |
| 1997 | 51.3 | 60 |
| 1996 | 53.7 | 46 |
| 1995 | 54.29 | 42 |
| 1994 | 56.24 | 38 |
| 1993 | 57.78 | 37 |
| 1992 | 58.29 | 34 |
| 1991 | 60.25 | 32 |