| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 19.94 | 173 |
| 2015 | 20.03 | 173 |
| 2014 | 20.01 | 173 |
| 2013 | 20.53 | 172 |
| 2012 | 20.83 | 171 |
| 2011 | 19.87 | 172 |
| 2010 | 21.3 | 172 |
| 2009 | 21.09 | 171 |
| 2008 | 20.93 | 171 |
| 2007 | 20.73 | 171 |
| 2006 | 20.45 | 170 |
| 2005 | 20.09 | 172 |
| 2004 | 19.58 | 172 |
| 2003 | 19.05 | 173 |
| 2002 | 18.4 | 173 |
| 2001 | 17.9 | 175 |
| 2000 | 17.46 | 175 |
| 1999 | 16.88 | 176 |
| 1998 | 16.34 | 175 |
| 1997 | 15.82 | 174 |
| 1996 | 15.28 | 177 |
| 1995 | 14.68 | 177 |
| 1994 | 14.26 | 178 |
| 1993 | 13.73 | 177 |
| 1992 | 13.27 | 178 |
| 1991 | 12.35 | 178 |