| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 59.65 | 85 |
| 2015 | 59.1 | 87 |
| 2014 | 58.58 | 91 |
| 2013 | 57.08 | 99 |
| 2012 | 57.27 | 98 |
| 2011 | 56.23 | 103 |
| 2010 | 54.51 | 112 |
| 2009 | 53.14 | 125 |
| 2008 | 53.22 | 127 |
| 2007 | 55.15 | 112 |
| 2006 | 54.92 | 111 |
| 2005 | 54.84 | 110 |
| 2004 | 55.77 | 102 |
| 2003 | 57.63 | 86 |
| 2002 | 55.82 | 99 |
| 2001 | 58.63 | 81 |
| 2000 | 56.75 | 92 |
| 1999 | 56.74 | 92 |
| 1998 | 56.43 | 97 |
| 1997 | 58.01 | 84 |
| 1996 | 58.25 | 82 |
| 1995 | 59.39 | 72 |
| 1994 | 58.58 | 74 |
| 1993 | 58.77 | 74 |
| 1992 | 58.11 | 81 |
| 1991 | 56.46 | 96 |