| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 17.49 | 166 |
| 2015 | 17.52 | 165 |
| 2014 | 18 | 167 |
| 2013 | 19.5 | 169 |
| 2012 | 19.6 | 170 |
| 2011 | 19.7 | 172 |
| 2010 | 19.7 | 172 |
| 2009 | 19.1 | 175 |
| 2008 | 16.8 | 172 |
| 2007 | 19.4 | 174 |
| 2006 | 18.79 | 170 |
| 2005 | 19.59 | 173 |
| 2004 | 19.53 | 171 |
| 2003 | 20.26 | 172 |
| 2002 | 19.27 | 169 |
| 2001 | 19.22 | 168 |
| 2000 | 19.33 | 171 |
| 1999 | 19.51 | 173 |
| 1998 | 19.02 | 170 |
| 1997 | 19.16 | 168 |
| 1996 | 19.48 | 171 |
| 1995 | 19.89 | 173 |
| 1994 | 19.72 | 170 |
| 1993 | 19.75 | 170 |
| 1992 | 19.76 | 172 |
| 1991 | 19.72 | 172 |