| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 51.37 | 119 |
| 2015 | 49.63 | 147 |
| 2014 | 52.89 | 149 |
| 2013 | 49.57 | 162 |
| 2012 | 45.4 | 169 |
| 2011 | 44.86 | 176 |
| 2010 | 40.36 | 176 |
| 2009 | 37.07 | 178 |
| 2008 | 52.34 | 166 |
| 2007 | 48.54 | 167 |
| 2006 | 43.96 | 172 |
| 2005 | 41.93 | 171 |
| 2004 | 39.23 | 172 |
| 2003 | 40.15 | 170 |
| 2002 | 40.65 | 166 |
| 2001 | 45.13 | 154 |
| 2000 | 42.91 | 156 |
| 1999 | 38.67 | 154 |
| 1998 | 39.14 | 159 |
| 1997 | 39.79 | 156 |
| 1996 | 41.77 | 155 |
| 1995 | 41.37 | 154 |
| 1994 | 38.02 | 153 |
| 1993 | 31.75 | 151 |
| 1992 | 38.86 | 136 |
| 1991 | 34.64 | 145 |
| 1990 | 37.5 | 134 |
| 1989 | 38.48 | 119 |
| 1988 | 31.99 | 125 |
| 1987 | 37.32 | 112 |
| 1986 | 46.01 | 93 |