| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 20.16 | 13 |
| 2015 | -5.51 | 146 |
| 2014 | 12.42 | 54 |
| 2013 | 24.2 | 10 |
| 2012 | 18.79 | 30 |
| 2011 | 37.01 | 8 |
| 2010 | 62.5 | 2 |
| 2009 | 26.87 | 18 |
| 2008 | -5.47 | 162 |
| 2007 | 56.27 | 7 |
| 2006 | 34.77 | 27 |
| 2005 | 34.61 | 19 |
| 2004 | 20.43 | 48 |
| 2003 | 49.55 | 9 |
| 2002 | 42.06 | 11 |
| 2001 | 27.91 | 42 |
| 2000 | 17.56 | 58 |
| 1999 | 31.64 | 21 |
| 1998 | -1.66 | 143 |
| 1997 | 42.2 | 18 |
| 1996 | 17.2 | 68 |
| 1995 | 32.6 | 34 |
| 1994 | 79.96 | 13 |
| 1993 | 227.62 | 7 |
| 1992 | 31.65 | 32 |