| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 18.42 | 170 |
| 2015 | 18.3 | 172 |
| 2014 | 18.74 | 169 |
| 2013 | 18.25 | 168 |
| 2012 | 17.52 | 173 |
| 2011 | 19 | 170 |
| 2010 | 18.04 | 175 |
| 2009 | 18.33 | 175 |
| 2008 | 18.74 | 176 |
| 2007 | 18.06 | 179 |
| 2006 | 19.36 | 176 |
| 2005 | 18.15 | 179 |
| 2004 | 18.64 | 178 |
| 2003 | 20.63 | 170 |
| 2002 | 27.19 | 150 |
| 2001 | 28.13 | 149 |
| 2000 | 30.82 | 142 |
| 1999 | 28.57 | 152 |
| 1998 | 35.26 | 124 |
| 1997 | 34.9 | 127 |
| 1996 | 37.54 | 108 |
| 1995 | 39.08 | 105 |
| 1994 | 40.45 | 100 |
| 1993 | 41.66 | 97 |
| 1992 | 42.61 | 96 |
| 1991 | 43.55 | 89 |