| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.74 | 92 |
| 2015 | 2.64 | 107 |
| 2014 | 2.24 | 126 |
| 2013 | 1.3 | 148 |
| 2012 | 0.17 | 158 |
| 2011 | 8.45 | 20 |
| 2010 | -2.73 | 190 |
| 2009 | -4.43 | 163 |
| 2008 | 7.98 | 28 |
| 2007 | 6.35 | 85 |
| 2006 | 2.14 | 176 |
| 2005 | -3.78 | 201 |
| 2004 | -1.35 | 198 |
| 2003 | -3.33 | 195 |
| 2002 | 7.89 | 17 |
| 2001 | 1.63 | 143 |
| 2000 | -.97 | 183 |
| 1999 | -1.56 | 174 |
| 1998 | 15.5 | 5 |
| 1997 | 10 | 16 |
| 1996 | -5.96 | 188 |
| 1995 | -5 | 174 |
| 1994 | 10.28 | 9 |
| 1993 | 4.11 | 66 |
| 1992 | 2.79 | 80 |
| 1991 | 3.61 | 63 |