| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 57.02 | 103 |
| 2015 | 56.94 | 103 |
| 2014 | 56.48 | 103 |
| 2013 | 56.32 | 104 |
| 2012 | 55.93 | 103 |
| 2011 | 55.76 | 104 |
| 2010 | 55.81 | 102 |
| 2009 | 55.94 | 105 |
| 2008 | 56.17 | 108 |
| 2007 | 56.36 | 108 |
| 2006 | 56.28 | 106 |
| 2005 | 55.02 | 108 |
| 2004 | 53.71 | 114 |
| 2003 | 49.08 | 141 |
| 2002 | 46.85 | 151 |
| 2001 | 47.97 | 145 |
| 2000 | 49.18 | 141 |
| 1999 | 49.71 | 140 |
| 1998 | 50.46 | 137 |
| 1997 | 49.26 | 144 |
| 1996 | 47.99 | 148 |
| 1995 | 47.18 | 153 |
| 1994 | 50.78 | 136 |
| 1993 | 51.8 | 129 |
| 1992 | 53.64 | 119 |
| 1991 | 54.18 | 115 |