| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 70.81 | 117 |
| 2015 | 70.92 | 116 |
| 2014 | 71.03 | 117 |
| 2013 | 71.43 | 113 |
| 2012 | 71.79 | 108 |
| 2011 | 72.28 | 107 |
| 2010 | 72.47 | 105 |
| 2009 | 72.32 | 108 |
| 2008 | 72.67 | 110 |
| 2007 | 72.6 | 109 |
| 2006 | 72.31 | 114 |
| 2005 | 72.17 | 113 |
| 2004 | 71.64 | 119 |
| 2003 | 71.68 | 117 |
| 2002 | 71.99 | 118 |
| 2001 | 72.14 | 118 |
| 2000 | 72.48 | 119 |
| 1999 | 72.57 | 119 |
| 1998 | 72.96 | 115 |
| 1997 | 73.25 | 115 |
| 1996 | 73.79 | 114 |
| 1995 | 74.06 | 110 |
| 1994 | 73.78 | 114 |
| 1993 | 73.81 | 114 |
| 1992 | 74.3 | 115 |
| 1991 | 74.81 | 114 |
| 1990 | 75.73 | 109 |