| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 9.16 | 186 |
| 2015 | 8.26 | 186 |
| 2014 | 10 | 186 |
| 2013 | 11.25 | 186 |
| 2012 | 10.55 | 186 |
| 2011 | 13.07 | 183 |
| 2010 | 13.56 | 182 |
| 2009 | 16.43 | 179 |
| 2008 | 17.1 | 178 |
| 2007 | 13.83 | 185 |
| 2006 | 12.41 | 185 |
| 2005 | 17.35 | 181 |
| 2004 | 13.44 | 183 |
| 2003 | 15.16 | 182 |
| 2002 | 15.41 | 182 |
| 2001 | 12.29 | 186 |
| 2000 | 15.15 | 185 |
| 1999 | 15.12 | 185 |
| 1998 | 15.1 | 184 |
| 1997 | 15.09 | 186 |
| 1996 | 14.98 | 186 |
| 1995 | 14.38 | 186 |
| 1994 | 14.01 | 186 |
| 1993 | 13.93 | 186 |
| 1992 | 16.08 | 186 |
| 1991 | 18 | 185 |