| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 69.74 | 83 |
| 2015 | 68.95 | 89 |
| 2014 | 68.51 | 89 |
| 2013 | 68.41 | 89 |
| 2012 | 68.83 | 87 |
| 2011 | 68.98 | 88 |
| 2010 | 71.92 | 72 |
| 2009 | 70.98 | 77 |
| 2008 | 70.29 | 84 |
| 2007 | 69.19 | 92 |
| 2006 | 68.32 | 98 |
| 2005 | 70.05 | 81 |
| 2004 | 69.31 | 88 |
| 2003 | 67.75 | 93 |
| 2002 | 66.88 | 102 |
| 2001 | 67.21 | 105 |
| 2000 | 68.57 | 96 |
| 1999 | 69.76 | 84 |
| 1998 | 67.67 | 100 |
| 1997 | 67.85 | 103 |
| 1996 | 68 | 103 |
| 1995 | 67.33 | 108 |
| 1994 | 68.63 | 100 |
| 1993 | 67.7 | 109 |
| 1992 | 67.03 | 116 |
| 1991 | 70.41 | 93 |