| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 40.9 | 132 |
| 2015 | 41.13 | 129 |
| 2014 | 41.42 | 129 |
| 2013 | 41.22 | 128 |
| 2012 | 41.17 | 129 |
| 2011 | 41.31 | 127 |
| 2010 | 41.26 | 125 |
| 2009 | 42.17 | 118 |
| 2008 | 40.85 | 129 |
| 2007 | 40.46 | 131 |
| 2006 | 38.73 | 135 |
| 2005 | 37.37 | 137 |
| 2004 | 36.01 | 138 |
| 2003 | 35.88 | 139 |
| 2002 | 35.46 | 139 |
| 2001 | 35.11 | 141 |
| 2000 | 34.53 | 142 |
| 1999 | 34.12 | 141 |
| 1998 | 34.12 | 143 |
| 1997 | 33.65 | 143 |
| 1996 | 33.31 | 141 |
| 1995 | 32.81 | 142 |
| 1994 | 34.24 | 134 |
| 1993 | 34.2 | 132 |
| 1992 | 33.85 | 133 |
| 1991 | 33.5 | 134 |