| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 18.33 | 172 |
| 2015 | 18.8 | 168 |
| 2014 | 19.22 | 166 |
| 2013 | 19.29 | 167 |
| 2012 | 19.31 | 166 |
| 2011 | 19.42 | 167 |
| 2010 | 19.48 | 171 |
| 2009 | 19.5 | 173 |
| 2008 | 19.54 | 175 |
| 2007 | 18.82 | 177 |
| 2006 | 18.49 | 178 |
| 2005 | 18.28 | 178 |
| 2004 | 12.9 | 184 |
| 2003 | 12.36 | 185 |
| 2002 | 19.66 | 175 |
| 2001 | 19.87 | 176 |
| 2000 | 20.06 | 177 |
| 1999 | 20.02 | 177 |
| 1998 | 20.12 | 176 |
| 1997 | 20.4 | 176 |
| 1996 | 20.32 | 178 |
| 1995 | 21.05 | 177 |
| 1994 | 21.1 | 176 |
| 1993 | 20.81 | 178 |
| 1992 | 21.17 | 175 |
| 1991 | 22.1 | 175 |