| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 60.24 | 73 |
| 2015 | 61.38 | 78 |
| 2014 | 61.95 | 90 |
| 2013 | 61.28 | 92 |
| 2012 | 60.32 | 101 |
| 2011 | 58.19 | 109 |
| 2010 | 53.36 | 116 |
| 2009 | 47.54 | 124 |
| 2008 | 57.84 | 120 |
| 2007 | 56.05 | 120 |
| 2006 | 55.35 | 120 |
| 2005 | 52.03 | 122 |
| 2004 | 47.96 | 129 |
| 2003 | 47.86 | 121 |
| 2002 | 49.22 | 111 |
| 2001 | 52.32 | 104 |
| 2000 | 54.34 | 101 |
| 1999 | 50.61 | 100 |
| 1998 | 51 | 97 |
| 1997 | 50.42 | 103 |
| 1996 | 48.78 | 103 |
| 1995 | 46.89 | 109 |
| 1994 | 45.19 | 99 |
| 1993 | 41.72 | 102 |
| 1992 | 44.54 | 92 |
| 1991 | 47.5 | 78 |
| 1990 | 52.95 | 67 |
| 1989 | 52.59 | 65 |
| 1988 | 51.2 | 68 |
| 1987 | 48.33 | 75 |
| 1986 | 43.59 | 79 |