| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 59.88 | 78 |
| 2015 | 59.73 | 80 |
| 2014 | 59.44 | 81 |
| 2013 | 59.33 | 81 |
| 2012 | 59.01 | 84 |
| 2011 | 58.88 | 84 |
| 2010 | 58.06 | 88 |
| 2009 | 58.19 | 84 |
| 2008 | 60.02 | 76 |
| 2007 | 60.02 | 75 |
| 2006 | 59.42 | 75 |
| 2005 | 58.9 | 75 |
| 2004 | 58.4 | 78 |
| 2003 | 59.43 | 70 |
| 2002 | 59.84 | 68 |
| 2001 | 60.05 | 70 |
| 2000 | 59.45 | 71 |
| 1999 | 57.27 | 88 |
| 1998 | 56.18 | 98 |
| 1997 | 55.75 | 99 |
| 1996 | 57.03 | 87 |
| 1995 | 57.38 | 88 |
| 1994 | 56.64 | 94 |
| 1993 | 57.42 | 85 |
| 1992 | 61.13 | 62 |
| 1991 | 64.17 | 41 |