| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 52.18 | 131 |
| 2015 | 53.11 | 131 |
| 2014 | 54.13 | 130 |
| 2013 | 55.21 | 130 |
| 2012 | 56.33 | 130 |
| 2011 | 57.41 | 130 |
| 2010 | 58.43 | 129 |
| 2009 | 59.46 | 129 |
| 2008 | 60.44 | 130 |
| 2007 | 61.36 | 129 |
| 2006 | 62.26 | 128 |
| 2005 | 63.17 | 128 |
| 2004 | 64.11 | 127 |
| 2003 | 65.05 | 127 |
| 2002 | 65.98 | 125 |
| 2001 | 66.86 | 123 |
| 2000 | 67.67 | 123 |
| 1999 | 68.64 | 123 |
| 1998 | 69.59 | 123 |
| 1997 | 70.5 | 122 |
| 1996 | 71.37 | 118 |
| 1995 | 72.15 | 120 |
| 1994 | 73.07 | 119 |
| 1993 | 73.93 | 120 |
| 1992 | 74.72 | 120 |
| 1991 | 75.43 | 121 |
| 1990 | 76.03 | 121 |
| 1989 | 76.64 | 120 |
| 1988 | 77.15 | 120 |
| 1987 | 77.56 | 120 |
| 1986 | 77.86 | 121 |