| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 41.12 | 130 |
| 2015 | 40.02 | 134 |
| 2014 | 39.17 | 136 |
| 2013 | 38.44 | 137 |
| 2012 | 39.35 | 135 |
| 2011 | 40.67 | 129 |
| 2010 | 41.01 | 127 |
| 2009 | 41.47 | 124 |
| 2008 | 43.21 | 114 |
| 2007 | 43.03 | 117 |
| 2006 | 41.94 | 119 |
| 2005 | 40.35 | 125 |
| 2004 | 37.93 | 135 |
| 2003 | 36.34 | 137 |
| 2002 | 34.82 | 142 |
| 2001 | 33.89 | 146 |
| 2000 | 32.58 | 152 |
| 1999 | 30.55 | 157 |
| 1998 | 28.55 | 161 |
| 1997 | 27.76 | 161 |
| 1996 | 26.7 | 164 |
| 1995 | 25.91 | 165 |
| 1994 | 25.18 | 165 |
| 1993 | 25.55 | 161 |
| 1992 | 26.3 | 160 |
| 1991 | 26.47 | 160 |