| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 32.08 | 151 |
| 2015 | 29.46 | 169 |
| 2014 | 32.76 | 171 |
| 2013 | 31.59 | 175 |
| 2012 | 33.65 | 174 |
| 2011 | 37.07 | 174 |
| 2010 | 36.25 | 168 |
| 2009 | 34.49 | 165 |
| 2008 | 36.72 | 172 |
| 2007 | 35.92 | 172 |
| 2006 | 35.14 | 174 |
| 2005 | 33.35 | 171 |
| 2004 | 31.95 | 174 |
| 2003 | 34.16 | 160 |
| 2002 | 34.9 | 154 |
| 2001 | 33.59 | 157 |
| 2000 | 32.59 | 160 |
| 1999 | 32.18 | 153 |
| 1998 | 30.15 | 157 |
| 1997 | 29.54 | 160 |
| 1996 | 31.29 | 157 |
| 1995 | 31.05 | 159 |
| 1994 | 31.23 | 152 |
| 1993 | 28.27 | 134 |
| 1992 | 26.6 | 139 |
| 1991 | 25.61 | 136 |
| 1990 | 26.25 | 140 |
| 1989 | 27.36 | 130 |
| 1988 | 29.36 | 122 |
| 1987 | 29.54 | 119 |
| 1986 | 26.7 | 122 |