| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 63.08 | 94 |
| 2015 | 62.88 | 94 |
| 2014 | 62.66 | 96 |
| 2013 | 62.51 | 98 |
| 2012 | 64.17 | 84 |
| 2011 | 64.8 | 78 |
| 2010 | 64.08 | 85 |
| 2009 | 63.75 | 89 |
| 2008 | 64.48 | 83 |
| 2007 | 65.12 | 75 |
| 2006 | 65.72 | 68 |
| 2005 | 64.87 | 73 |
| 2004 | 63.69 | 82 |
| 2003 | 64 | 77 |
| 2002 | 64.36 | 74 |
| 2001 | 64.63 | 75 |
| 2000 | 64.86 | 71 |
| 1999 | 65.08 | 72 |
| 1998 | 65.28 | 69 |
| 1997 | 65.45 | 67 |
| 1996 | 65.6 | 65 |
| 1995 | 65.72 | 61 |
| 1994 | 65.77 | 58 |
| 1993 | 65.81 | 58 |
| 1992 | 65.84 | 61 |
| 1991 | 65.9 | 65 |
| 1990 | 66.03 | 65 |