| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 60.06 | 77 |
| 2015 | 60.58 | 74 |
| 2014 | 61.08 | 65 |
| 2013 | 60.97 | 68 |
| 2012 | 61.49 | 62 |
| 2011 | 61.92 | 57 |
| 2010 | 60.91 | 63 |
| 2009 | 60.64 | 69 |
| 2008 | 59.99 | 77 |
| 2007 | 58.68 | 91 |
| 2006 | 57.33 | 99 |
| 2005 | 55.18 | 106 |
| 2004 | 53.18 | 119 |
| 2003 | 52.38 | 121 |
| 2002 | 52.79 | 120 |
| 2001 | 54.94 | 108 |
| 2000 | 54.86 | 103 |
| 1999 | 56.09 | 96 |
| 1998 | 56.98 | 93 |
| 1997 | 55.9 | 96 |
| 1996 | 56.2 | 97 |
| 1995 | 56.7 | 92 |
| 1994 | 56.49 | 96 |
| 1993 | 55.85 | 101 |
| 1992 | 56.2 | 97 |
| 1991 | 55.29 | 104 |