| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 22.72 | 168 |
| 2015 | 26.29 | 174 |
| 2014 | 22.59 | 183 |
| 2013 | 21.88 | 184 |
| 2012 | 23.25 | 185 |
| 2011 | 23.96 | 188 |
| 2010 | 23.11 | 187 |
| 2009 | 26.6 | 185 |
| 2008 | 37.66 | 170 |
| 2007 | 46.82 | 145 |
| 2006 | 52.69 | 128 |
| 2005 | 57.81 | 109 |
| 2004 | 65.24 | 79 |
| 2003 | 70.94 | 59 |
| 2002 | 73.27 | 60 |
| 2001 | 75.22 | 54 |
| 2000 | 76.84 | 56 |
| 1999 | 65.33 | 67 |
| 1998 | 60.75 | 72 |
| 1997 | 58.66 | 78 |
| 1996 | 56.1 | 79 |
| 1995 | 57.73 | 78 |
| 1994 | 61.72 | 61 |
| 1993 | 67.76 | 48 |
| 1992 | 76.53 | 34 |
| 1991 | 94.16 | 19 |
| 1990 | 100.59 | 16 |
| 1989 | 116.39 | 12 |
| 1988 | 123.08 | 7 |
| 1987 | 129.92 | 6 |
| 1986 | 126.85 | 6 |