| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 48.33 | 114 |
| 2014 | 55.7 | 109 |
| 2013 | 60.29 | 97 |
| 2012 | 55.47 | 113 |
| 2011 | 55.93 | 115 |
| 2010 | 51.53 | 120 |
| 2009 | 47.42 | 125 |
| 2008 | 59.82 | 113 |
| 2007 | 57.97 | 118 |
| 2006 | 58.06 | 112 |
| 2005 | 60.07 | 99 |
| 2004 | 57.18 | 109 |
| 2003 | 57.32 | 89 |
| 2002 | 59.02 | 85 |
| 2001 | 54.5 | 95 |
| 2000 | 59.74 | 84 |
| 1999 | 60.62 | 77 |
| 1998 | 57.75 | 84 |
| 1997 | 64.36 | 68 |
| 1996 | 69.98 | 56 |
| 1995 | 66.59 | 60 |
| 1994 | 64.42 | 58 |
| 1993 | 71.07 | 42 |
| 1992 | 76.02 | 37 |
| 1991 | 73.68 | 33 |
| 1990 | 88.03 | 26 |
| 1989 | 87.87 | 27 |
| 1988 | 101.27 | 15 |
| 1987 | 108.33 | 11 |
| 1986 | 102.82 | 12 |