| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 35.04 | 173 |
| 2015 | 34.28 | 173 |
| 2014 | 33.52 | 172 |
| 2013 | 32.75 | 172 |
| 2012 | 31.99 | 173 |
| 2011 | 31.23 | 176 |
| 2010 | 30.46 | 178 |
| 2009 | 29.71 | 179 |
| 2008 | 28.97 | 179 |
| 2007 | 28.24 | 179 |
| 2006 | 27.52 | 182 |
| 2005 | 26.81 | 182 |
| 2004 | 26.11 | 183 |
| 2003 | 25.43 | 182 |
| 2002 | 24.76 | 184 |
| 2001 | 24.1 | 184 |
| 2000 | 23.59 | 184 |
| 1999 | 23.2 | 184 |
| 1998 | 22.82 | 187 |
| 1997 | 22.44 | 186 |
| 1996 | 22.06 | 186 |
| 1995 | 21.69 | 186 |
| 1994 | 21.33 | 188 |
| 1993 | 20.97 | 188 |
| 1992 | 20.61 | 188 |
| 1991 | 20.26 | 188 |
| 1990 | 19.81 | 188 |
| 1989 | 19.33 | 186 |
| 1988 | 18.86 | 186 |
| 1987 | 18.4 | 187 |
| 1986 | 17.94 | 187 |