| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 52.1 | 1 |
| 2015 | 43.958 | 3 |
| 2014 | 32.008 | 3 |
| 2013 | 27.392 | 4 |
| 2012 | 36.637 | 2 |
| 2011 | 43.883 | 1 |
| 2010 | 39.992 | 2 |
| 2009 | 44.65 | 2 |
| 2008 | 47.25 | 1 |
| 2007 | 43.717 | 3 |
| 2006 | 50.808 | 2 |
| 2005 | 55.383 | 3 |
| 2004 | 54.925 | 3 |
| 2003 | 67.083 | 3 |
| 2002 | 62.875 | 3 |
| 2001 | 57.617 | 2 |
| 2000 | 56.83 | 4 |
| 1999 | 80.443 | 1 |
| 1998 | 86.363 | 1 |
| 1997 | 78.193 | 3 |