| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 55.45 | 115 |
| 2015 | 55.21 | 115 |
| 2014 | 55.56 | 113 |
| 2013 | 54.88 | 112 |
| 2012 | 55.04 | 112 |
| 2011 | 54.07 | 118 |
| 2010 | 54.49 | 113 |
| 2009 | 54.34 | 116 |
| 2008 | 52.22 | 130 |
| 2007 | 52.73 | 127 |
| 2006 | 52.67 | 125 |
| 2005 | 52.34 | 123 |
| 2004 | 51.33 | 125 |
| 2003 | 51.24 | 129 |
| 2002 | 52.46 | 123 |
| 2001 | 51.87 | 126 |
| 2000 | 52.12 | 127 |
| 1999 | 50.82 | 131 |
| 1998 | 49.78 | 142 |
| 1997 | 49.72 | 140 |
| 1996 | 49.15 | 142 |
| 1995 | 48.82 | 146 |
| 1994 | 50.26 | 139 |
| 1993 | 50.89 | 134 |
| 1992 | 51.6 | 129 |
| 1991 | 51.12 | 133 |