| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 16.69 | 175 |
| 2015 | 16.07 | 176 |
| 2014 | 15.03 | 178 |
| 2013 | 14.35 | 179 |
| 2012 | 12.75 | 183 |
| 2011 | 12.91 | 184 |
| 2010 | 15.31 | 179 |
| 2009 | 17.62 | 178 |
| 2008 | 21.03 | 170 |
| 2007 | 18.63 | 178 |
| 2006 | 19.23 | 177 |
| 2005 | 19.64 | 175 |
| 2004 | 21.45 | 169 |
| 2003 | 24.49 | 161 |
| 2002 | 26 | 154 |
| 2001 | 27.17 | 154 |
| 2000 | 27.6 | 154 |
| 1999 | 26.84 | 157 |
| 1998 | 26.97 | 154 |
| 1997 | 26.96 | 153 |
| 1996 | 27.56 | 151 |
| 1995 | 27.47 | 155 |
| 1994 | 20.75 | 177 |
| 1993 | 23.06 | 170 |
| 1992 | 25.37 | 163 |
| 1991 | 27.62 | 160 |