| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 26.73 | 183 |
| 2015 | 26.07 | 181 |
| 2014 | 28.03 | 183 |
| 2013 | 29 | 183 |
| 2012 | 31 | 185 |
| 2011 | 31.4 | 186 |
| 2010 | 32 | 186 |
| 2009 | 32.2 | 186 |
| 2008 | 33.8 | 185 |
| 2007 | 35 | 186 |
| 2006 | 36.1 | 186 |
| 2005 | 37.27 | 186 |
| 2004 | 37.15 | 186 |
| 2003 | 36.69 | 186 |
| 2002 | 31.94 | 186 |
| 2001 | 30.5 | 183 |
| 2000 | 32.2 | 185 |
| 1999 | 32.4 | 186 |
| 1998 | 34.5 | 186 |
| 1997 | 36 | 185 |
| 1996 | 35.61 | 186 |
| 1995 | 31.26 | 184 |
| 1994 | 31.35 | 185 |
| 1993 | 30.29 | 185 |
| 1992 | 30.53 | 185 |
| 1991 | 30.63 | 185 |