| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 66.06 | 151 |
| 2015 | 66.16 | 151 |
| 2014 | 66.34 | 151 |
| 2013 | 66.23 | 153 |
| 2012 | 67.41 | 147 |
| 2011 | 68.45 | 136 |
| 2010 | 69.1 | 133 |
| 2009 | 70.21 | 124 |
| 2008 | 71.24 | 120 |
| 2007 | 71.06 | 120 |
| 2006 | 71.56 | 117 |
| 2005 | 71.44 | 118 |
| 2004 | 71.92 | 116 |
| 2003 | 71.6 | 119 |
| 2002 | 72.08 | 117 |
| 2001 | 71.25 | 127 |
| 2000 | 71.73 | 123 |
| 1999 | 72.63 | 118 |
| 1998 | 71.75 | 126 |
| 1997 | 73.13 | 116 |
| 1996 | 72.86 | 119 |
| 1995 | 73.04 | 119 |
| 1994 | 71.38 | 135 |
| 1993 | 73.19 | 123 |
| 1992 | 74.11 | 118 |
| 1991 | 74.5 | 116 |
| 1990 | 75.33 | 112 |