| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 44.6 | 114 |
| 2015 | 45.15 | 115 |
| 2014 | 45.75 | 115 |
| 2013 | 46.45 | 115 |
| 2012 | 47.21 | 116 |
| 2011 | 47.96 | 116 |
| 2010 | 48.65 | 116 |
| 2009 | 49.47 | 116 |
| 2008 | 50.27 | 115 |
| 2007 | 51.06 | 115 |
| 2006 | 51.93 | 115 |
| 2005 | 52.92 | 114 |
| 2004 | 53.84 | 113 |
| 2003 | 54.83 | 110 |
| 2002 | 55.84 | 109 |
| 2001 | 56.79 | 108 |
| 2000 | 57.64 | 108 |
| 1999 | 58.6 | 105 |
| 1998 | 59.47 | 106 |
| 1997 | 60.27 | 105 |
| 1996 | 61.06 | 104 |
| 1995 | 61.88 | 104 |
| 1994 | 62.8 | 103 |
| 1993 | 63.73 | 102 |
| 1992 | 64.66 | 100 |
| 1991 | 65.57 | 100 |
| 1990 | 66.42 | 102 |
| 1989 | 67.46 | 101 |
| 1988 | 68.5 | 101 |
| 1987 | 69.54 | 102 |
| 1986 | 70.59 | 102 |