| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 57.01 | 161 |
| 2015 | 56.39 | 162 |
| 2014 | 55.72 | 163 |
| 2013 | 54.45 | 165 |
| 2012 | 55.67 | 161 |
| 2011 | 58.5 | 157 |
| 2010 | 60.27 | 146 |
| 2009 | 61.45 | 142 |
| 2008 | 64.37 | 125 |
| 2007 | 64.57 | 124 |
| 2006 | 64.88 | 118 |
| 2005 | 64.66 | 120 |
| 2004 | 65.55 | 111 |
| 2003 | 66.25 | 105 |
| 2002 | 67.68 | 96 |
| 2001 | 68.12 | 99 |
| 2000 | 67.59 | 105 |
| 1999 | 66.56 | 111 |
| 1998 | 67.03 | 108 |
| 1997 | 64.58 | 130 |
| 1996 | 63.77 | 136 |
| 1995 | 63.5 | 142 |
| 1994 | 64.73 | 130 |
| 1993 | 65.81 | 122 |
| 1992 | 67.53 | 114 |
| 1991 | 70.35 | 94 |