| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 37.95 | 137 |
| 2015 | 42.09 | 162 |
| 2014 | 44.51 | 168 |
| 2013 | 46.3 | 170 |
| 2012 | 48.11 | 164 |
| 2011 | 47.42 | 172 |
| 2010 | 37.8 | 180 |
| 2009 | 40.09 | 175 |
| 2008 | 42.62 | 175 |
| 2007 | 39.94 | 179 |
| 2006 | 38.11 | 179 |
| 2005 | 34.4 | 183 |
| 2004 | 26.86 | 185 |
| 2003 | 27.66 | 183 |
| 2002 | 28.97 | 181 |
| 2001 | 32.1 | 171 |
| 2000 | 29.32 | 171 |
| 1999 | 28.39 | 173 |
| 1998 | 27.88 | 173 |
| 1997 | 26.33 | 173 |
| 1996 | 26.08 | 171 |
| 1995 | 28.21 | 169 |
| 1994 | 22.87 | 166 |
| 1993 | 23.12 | 159 |
| 1992 | 19.93 | 159 |
| 1991 | 18.89 | 158 |
| 1990 | 18.97 | 154 |
| 1989 | 18.33 | 140 |
| 1988 | 17.68 | 134 |
| 1987 | 16.69 | 135 |
| 1986 | 17.02 | 131 |