| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 61.7 | 143 |
| 2015 | 61.62 | 142 |
| 2014 | 61.46 | 142 |
| 2013 | 61.78 | 141 |
| 2012 | 61.54 | 141 |
| 2011 | 61.61 | 141 |
| 2010 | 64.96 | 113 |
| 2009 | 64.36 | 116 |
| 2008 | 65.75 | 114 |
| 2007 | 67.24 | 104 |
| 2006 | 66.28 | 107 |
| 2005 | 65.2 | 116 |
| 2004 | 66.41 | 104 |
| 2003 | 64.38 | 123 |
| 2002 | 62.1 | 137 |
| 2001 | 64.1 | 127 |
| 2000 | 63.22 | 136 |
| 1999 | 64.21 | 131 |
| 1998 | 69.55 | 90 |
| 1997 | 68.67 | 97 |
| 1996 | 70.01 | 89 |
| 1995 | 70.65 | 84 |
| 1994 | 71.12 | 86 |
| 1993 | 72.86 | 77 |
| 1992 | 74.2 | 67 |
| 1991 | 74.61 | 65 |