| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 12.36 | 212 |
| 2015 | 12.06 | 212 |
| 2014 | 11.76 | 209 |
| 2013 | 11.47 | 209 |
| 2012 | 11.19 | 209 |
| 2011 | 10.91 | 210 |
| 2010 | 10.64 | 210 |
| 2009 | 10.38 | 210 |
| 2008 | 10.12 | 210 |
| 2007 | 9.86 | 210 |
| 2006 | 9.62 | 211 |
| 2005 | 9.38 | 211 |
| 2004 | 9.14 | 211 |
| 2003 | 8.91 | 211 |
| 2002 | 8.68 | 211 |
| 2001 | 8.46 | 211 |
| 2000 | 8.25 | 211 |
| 1999 | 8.04 | 211 |
| 1998 | 7.83 | 211 |
| 1997 | 7.62 | 211 |
| 1996 | 7.41 | 211 |
| 1995 | 7.21 | 211 |
| 1994 | 7.01 | 211 |
| 1993 | 6.82 | 211 |
| 1992 | 6.64 | 210 |
| 1991 | 6.46 | 210 |
| 1990 | 6.27 | 210 |
| 1989 | 6.05 | 208 |
| 1988 | 5.83 | 208 |
| 1987 | 5.62 | 208 |
| 1986 | 5.42 | 208 |