| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 62.5 | 70 |
| 2015 | 69.9 | 63 |
| 2014 | 69.29 | 73 |
| 2013 | 73.09 | 73 |
| 2012 | 81.82 | 60 |
| 2011 | 82.87 | 59 |
| 2010 | 84.27 | 47 |
| 2009 | 90.85 | 31 |
| 2008 | 103.58 | 34 |
| 2007 | 100.15 | 34 |
| 2006 | 118.18 | 16 |
| 2005 | 111.73 | 22 |
| 2004 | 104.64 | 27 |
| 2003 | 99.68 | 28 |
| 2002 | 96.82 | 26 |
| 2001 | 103.84 | 21 |
| 2000 | 92.44 | 32 |
| 1999 | 87.34 | 32 |