| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 19.03 | 202 |
| 2015 | 18.8 | 203 |
| 2014 | 18.59 | 200 |
| 2013 | 18.39 | 201 |
| 2012 | 18.2 | 201 |
| 2011 | 18.02 | 202 |
| 2010 | 17.86 | 202 |
| 2009 | 17.7 | 202 |
| 2008 | 17.56 | 202 |
| 2007 | 17.42 | 202 |
| 2006 | 17.29 | 202 |
| 2005 | 17.15 | 202 |
| 2004 | 17.02 | 202 |
| 2003 | 16.89 | 202 |
| 2002 | 16.76 | 201 |
| 2001 | 16.63 | 200 |
| 2000 | 16.5 | 200 |
| 1999 | 16.38 | 200 |
| 1998 | 16.25 | 200 |
| 1997 | 16.12 | 199 |
| 1996 | 16 | 200 |
| 1995 | 15.87 | 200 |
| 1994 | 15.75 | 200 |
| 1993 | 15.63 | 200 |
| 1992 | 14.91 | 201 |
| 1991 | 14.07 | 202 |
| 1990 | 13.28 | 204 |
| 1989 | 12.52 | 202 |
| 1988 | 11.8 | 203 |
| 1987 | 11.11 | 203 |
| 1986 | 10.46 | 203 |