| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 39.51 | 128 |
| 2015 | 39.45 | 128 |
| 2014 | 39.39 | 128 |
| 2013 | 39.17 | 131 |
| 2012 | 38.92 | 132 |
| 2011 | 38.64 | 135 |
| 2010 | 38.33 | 136 |
| 2009 | 38.09 | 135 |
| 2008 | 38.06 | 132 |
| 2007 | 37.8 | 136 |
| 2006 | 37.43 | 135 |
| 2005 | 36.73 | 137 |
| 2004 | 36.01 | 139 |
| 2003 | 35.28 | 143 |
| 2002 | 34.56 | 146 |
| 2001 | 33.84 | 147 |
| 2000 | 33.12 | 149 |
| 1999 | 32.4 | 153 |
| 1998 | 31.69 | 154 |
| 1997 | 30.98 | 155 |
| 1996 | 30.27 | 156 |
| 1995 | 29.58 | 157 |
| 1994 | 29.84 | 155 |
| 1993 | 30.1 | 153 |
| 1992 | 30.36 | 151 |
| 1991 | 30.63 | 149 |
| 1990 | 30.89 | 148 |