| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 64.63 | 121 |
| 2015 | 65.21 | 115 |
| 2014 | 63.89 | 126 |
| 2013 | 62.63 | 135 |
| 2012 | 61.19 | 142 |
| 2011 | 59.54 | 148 |
| 2010 | 54.61 | 167 |
| 2009 | 57.35 | 160 |
| 2008 | 65.65 | 116 |
| 2007 | 65.35 | 117 |
| 2006 | 63.67 | 130 |
| 2005 | 59.63 | 153 |
| 2004 | 59.45 | 155 |
| 2003 | 59.42 | 154 |
| 2002 | 58.3 | 159 |
| 2001 | 58.34 | 159 |
| 2000 | 57.26 | 163 |
| 1999 | 59.28 | 156 |
| 1998 | 62.65 | 142 |
| 1997 | 62.13 | 143 |
| 1996 | 63.08 | 139 |
| 1995 | 63.63 | 141 |
| 1994 | 67.04 | 109 |
| 1993 | 68.68 | 104 |
| 1992 | 71.66 | 84 |
| 1991 | 74.54 | 67 |