| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 22.21 | 155 |
| 2015 | 21.92 | 155 |
| 2014 | 21.62 | 157 |
| 2013 | 21.38 | 159 |
| 2012 | 21.22 | 161 |
| 2011 | 21.14 | 163 |
| 2010 | 21.15 | 164 |
| 2009 | 21.28 | 165 |
| 2008 | 21.5 | 167 |
| 2007 | 21.73 | 168 |
| 2006 | 21.82 | 169 |
| 2005 | 21.68 | 169 |
| 2004 | 21.5 | 167 |
| 2003 | 21.03 | 165 |
| 2002 | 20.35 | 164 |
| 2001 | 19.67 | 163 |
| 2000 | 19.1 | 163 |
| 1999 | 18.81 | 162 |
| 1998 | 18.64 | 162 |
| 1997 | 18.51 | 162 |
| 1996 | 18.24 | 163 |
| 1995 | 17.74 | 162 |
| 1994 | 17.23 | 157 |
| 1993 | 16.5 | 155 |
| 1992 | 15.65 | 152 |
| 1991 | 14.83 | 147 |
| 1990 | 14.14 | 147 |
| 1989 | 13.76 | 147 |
| 1988 | 13.54 | 147 |
| 1987 | 13.45 | 147 |
| 1986 | 13.41 | 147 |