| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 31.29 | 187 |
| 2015 | 30.46 | 187 |
| 2014 | 29.67 | 186 |
| 2013 | 28.8 | 186 |
| 2012 | 27.91 | 186 |
| 2011 | 27.1 | 187 |
| 2010 | 26.41 | 187 |
| 2009 | 25.98 | 185 |
| 2008 | 25.69 | 185 |
| 2007 | 25.5 | 185 |
| 2006 | 25.33 | 185 |
| 2005 | 25.13 | 185 |
| 2004 | 25.1 | 185 |
| 2003 | 25.06 | 185 |
| 2002 | 24.97 | 188 |
| 2001 | 24.79 | 189 |
| 2000 | 24.49 | 189 |
| 1999 | 24.31 | 189 |
| 1998 | 23.98 | 188 |
| 1997 | 23.55 | 188 |
| 1996 | 23.06 | 188 |
| 1995 | 22.55 | 185 |
| 1994 | 22.05 | 184 |
| 1993 | 21.56 | 182 |
| 1992 | 21.04 | 181 |
| 1991 | 20.45 | 179 |
| 1990 | 19.76 | 178 |
| 1989 | 19.19 | 175 |
| 1988 | 18.53 | 173 |
| 1987 | 17.85 | 171 |
| 1986 | 17.28 | 169 |