| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 36.21 | 96 |
| 2015 | 36.15 | 96 |
| 2014 | 36.04 | 96 |
| 2013 | 36.51 | 96 |
| 2012 | 36.53 | 95 |
| 2011 | 36.56 | 96 |
| 2010 | 35.71 | 99 |
| 2009 | 35 | 103 |
| 2008 | 34.97 | 117 |
| 2007 | 35.03 | 114 |
| 2006 | 34.08 | 119 |
| 2005 | 36.11 | 107 |
| 2004 | 37.36 | 95 |
| 2003 | 38.78 | 88 |
| 2002 | 41.5 | 74 |
| 2001 | 40.61 | 84 |
| 2000 | 41.37 | 81 |
| 1999 | 43.58 | 73 |
| 1998 | 44.68 | 66 |
| 1997 | 44.95 | 66 |
| 1996 | 47.04 | 58 |
| 1995 | 48.2 | 53 |
| 1994 | 49.69 | 49 |
| 1993 | 51.17 | 45 |
| 1992 | 52.55 | 43 |
| 1991 | 51.76 | 45 |