| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 51.82 | 136 |
| 2015 | 51.48 | 136 |
| 2014 | 50.98 | 136 |
| 2013 | 50.88 | 137 |
| 2012 | 50.73 | 138 |
| 2011 | 50.62 | 136 |
| 2010 | 50.29 | 136 |
| 2009 | 48.87 | 145 |
| 2008 | 48.32 | 149 |
| 2007 | 47.78 | 150 |
| 2006 | 46.27 | 157 |
| 2005 | 48.17 | 144 |
| 2004 | 49.31 | 140 |
| 2003 | 50.59 | 134 |
| 2002 | 53.04 | 118 |
| 2001 | 52.17 | 122 |
| 2000 | 52.81 | 124 |
| 1999 | 54.84 | 104 |
| 1998 | 55.82 | 99 |
| 1997 | 56.04 | 95 |
| 1996 | 56.96 | 89 |
| 1995 | 58.9 | 75 |
| 1994 | 60.2 | 63 |
| 1993 | 61.49 | 57 |
| 1992 | 62.67 | 50 |
| 1991 | 61.96 | 58 |