| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 54.49 | 118 |
| 2015 | 54.41 | 117 |
| 2014 | 53.65 | 120 |
| 2013 | 52.82 | 124 |
| 2012 | 50.9 | 134 |
| 2011 | 49.18 | 144 |
| 2010 | 47.49 | 150 |
| 2009 | 49.98 | 138 |
| 2008 | 57.19 | 105 |
| 2007 | 56.99 | 104 |
| 2006 | 55.19 | 109 |
| 2005 | 52.03 | 124 |
| 2004 | 51.06 | 128 |
| 2003 | 50.66 | 133 |
| 2002 | 50.43 | 137 |
| 2001 | 48.81 | 139 |
| 2000 | 48.14 | 147 |
| 1999 | 49.62 | 142 |
| 1998 | 50.38 | 138 |
| 1997 | 50.38 | 138 |
| 1996 | 46.8 | 154 |
| 1995 | 56.07 | 100 |
| 1994 | 53.12 | 121 |
| 1993 | 52.88 | 121 |
| 1992 | 56.71 | 90 |
| 1991 | 55.6 | 101 |