| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 27.98 | 172 |
| 2015 | 26.91 | 172 |
| 2014 | 25.87 | 170 |
| 2013 | 24.82 | 170 |
| 2012 | 23.78 | 169 |
| 2011 | 22.82 | 168 |
| 2010 | 21.95 | 167 |
| 2009 | 21.31 | 166 |
| 2008 | 20.78 | 163 |
| 2007 | 20.34 | 162 |
| 2006 | 19.99 | 162 |
| 2005 | 19.72 | 163 |
| 2004 | 19.64 | 163 |
| 2003 | 19.66 | 163 |
| 2002 | 19.74 | 163 |
| 2001 | 19.8 | 164 |
| 2000 | 19.78 | 164 |
| 1999 | 19.84 | 167 |
| 1998 | 19.8 | 169 |
| 1997 | 19.69 | 169 |
| 1996 | 19.55 | 170 |
| 1995 | 19.4 | 170 |
| 1994 | 19.47 | 169 |
| 1993 | 19.55 | 172 |
| 1992 | 19.58 | 175 |
| 1991 | 19.51 | 176 |
| 1990 | 19.28 | 176 |
| 1989 | 19.15 | 174 |
| 1988 | 18.84 | 174 |
| 1987 | 18.44 | 174 |
| 1986 | 18.14 | 174 |