| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 38.9 | 179 |
| 2015 | 38.89 | 177 |
| 2014 | 38.95 | 176 |
| 2013 | 39.3 | 176 |
| 2012 | 37.91 | 178 |
| 2011 | 38.17 | 177 |
| 2010 | 38.07 | 178 |
| 2009 | 37.78 | 181 |
| 2008 | 37.37 | 180 |
| 2007 | 36.4 | 181 |
| 2006 | 37.14 | 180 |
| 2005 | 35.99 | 181 |
| 2004 | 35.1 | 182 |
| 2003 | 32.68 | 184 |
| 2002 | 31.9 | 185 |
| 2001 | 31.47 | 185 |
| 2000 | 30.59 | 186 |
| 1999 | 32.48 | 186 |
| 1998 | 32.84 | 186 |
| 1997 | 33.21 | 185 |
| 1996 | 31.73 | 185 |
| 1995 | 32.07 | 185 |
| 1994 | 33.3 | 185 |
| 1993 | 33.5 | 183 |
| 1992 | 33.26 | 185 |
| 1991 | 33.96 | 185 |