| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 18.96 | 205 |
| 2015 | 19.1 | 202 |
| 2014 | 19.26 | 198 |
| 2013 | 19.44 | 198 |
| 2012 | 19.64 | 198 |
| 2011 | 19.86 | 199 |
| 2010 | 20.08 | 197 |
| 2009 | 20.3 | 196 |
| 2008 | 20.52 | 196 |
| 2007 | 20.75 | 197 |
| 2006 | 20.98 | 196 |
| 2005 | 21.22 | 196 |
| 2004 | 21.46 | 194 |
| 2003 | 21.7 | 193 |
| 2002 | 21.94 | 191 |
| 2001 | 22.07 | 190 |
| 2000 | 21.98 | 189 |
| 1999 | 21.89 | 189 |
| 1998 | 21.8 | 188 |
| 1997 | 21.71 | 188 |
| 1996 | 21.62 | 187 |
| 1995 | 21.53 | 187 |
| 1994 | 21.44 | 187 |
| 1993 | 21.35 | 187 |
| 1992 | 21.26 | 185 |
| 1991 | 21.2 | 185 |
| 1990 | 21.2 | 183 |
| 1989 | 21.2 | 181 |
| 1988 | 21.2 | 181 |
| 1987 | 21.2 | 180 |
| 1986 | 21.2 | 180 |