| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 71.386 | 26 |
| 2015 | 71.172 | 36 |
| 2014 | 67.287 | 58 |
| 2013 | 68.094 | 57 |
| 2012 | 69.859 | 47 |
| 2011 | 68.397 | 55 |
| 2010 | 69.64 | 48 |
| 2009 | 74.089 | 28 |
| 2008 | 72.416 | 31 |
| 2007 | 70.842 | 37 |
| 2006 | 67.025 | 57 |
| 2005 | 64.132 | 63 |
| 2004 | 62.242 | 71 |
| 2003 | 53.954 | 103 |
| 2002 | 52.727 | 111 |
| 2001 | 49.945 | 116 |
| 2000 | 49.248 | 113 |
| 1999 | 53.096 | 96 |
| 1998 | 43.774 | 128 |
| 1997 | 40.763 | 130 |
| 1996 | 37.89 | 135 |
| 1995 | 34.827 | 140 |