| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.54 | 200 |
| 2015 | 4.69 | 199 |
| 2014 | 4.85 | 198 |
| 2013 | 5.02 | 198 |
| 2012 | 5.2 | 198 |
| 2011 | 5.39 | 199 |
| 2010 | 5.59 | 199 |
| 2009 | 5.79 | 199 |
| 2008 | 6 | 198 |
| 2007 | 6.22 | 196 |
| 2006 | 6.45 | 196 |
| 2005 | 6.68 | 196 |
| 2004 | 6.92 | 196 |
| 2003 | 7.17 | 196 |
| 2002 | 7.43 | 195 |
| 2001 | 7.7 | 195 |
| 2000 | 7.97 | 194 |
| 1999 | 8.26 | 194 |
| 1998 | 8.55 | 194 |
| 1997 | 8.85 | 194 |
| 1996 | 9.17 | 193 |
| 1995 | 9.46 | 194 |
| 1994 | 9.76 | 194 |
| 1993 | 10.06 | 194 |
| 1992 | 10.37 | 194 |
| 1991 | 10.7 | 194 |
| 1990 | 11.03 | 194 |
| 1989 | 11.37 | 192 |
| 1988 | 11.72 | 192 |
| 1987 | 12.07 | 192 |
| 1986 | 12.44 | 193 |