| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 63.24 | 131 |
| 2015 | 63.13 | 130 |
| 2014 | 63.02 | 130 |
| 2013 | 62.89 | 132 |
| 2012 | 62.83 | 132 |
| 2011 | 62.67 | 136 |
| 2010 | 61.56 | 142 |
| 2009 | 61.26 | 144 |
| 2008 | 61.85 | 145 |
| 2007 | 61.19 | 146 |
| 2006 | 59.92 | 155 |
| 2005 | 59.27 | 157 |
| 2004 | 58.81 | 158 |
| 2003 | 59.14 | 156 |
| 2002 | 61.11 | 146 |
| 2001 | 62.55 | 140 |
| 2000 | 63.06 | 138 |
| 1999 | 62.94 | 139 |
| 1998 | 63.3 | 135 |
| 1997 | 63.11 | 139 |
| 1996 | 63.96 | 135 |
| 1995 | 64.93 | 125 |
| 1994 | 64.94 | 127 |
| 1993 | 66.18 | 118 |
| 1992 | 67.9 | 108 |
| 1991 | 69.09 | 103 |