| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.11 | 75 |
| 2015 | 90.43 | 1 |
| 2014 | 6.88 | 36 |
| 2013 | -4.8 | 161 |
| 2012 | -2.15 | 138 |
| 2011 | -.83 | 150 |
| 2010 | 3.21 | 112 |
| 2009 | -8.29 | 135 |
| 2008 | -4.76 | 161 |
| 2007 | -.95 | 144 |
| 2006 | 4.66 | 91 |
| 2005 | 6.38 | 57 |
| 2004 | 1 | 146 |
| 2003 | 0.54 | 135 |
| 2002 | 9.06 | 26 |
| 2001 | 5.3 | 47 |
| 2000 | 15.16 | 12 |
| 1999 | 12.66 | 14 |
| 1998 | 10.04 | 22 |
| 1997 | 15.11 | 16 |
| 1996 | 7.83 | 30 |