| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.68 | 55 |
| 2015 | 1.74 | 59 |
| 2014 | 1.9 | 55 |
| 2013 | 1.84 | 55 |
| 2012 | 1.85 | 53 |
| 2011 | 1.68 | 56 |
| 2010 | 1.67 | 64 |
| 2009 | 1.99 | 53 |
| 2008 | 1.96 | 54 |
| 2007 | 1.69 | 67 |
| 2006 | 1.57 | 81 |
| 2005 | 1.77 | 70 |
| 2004 | 1.92 | 64 |
| 2003 | 2.15 | 59 |
| 2002 | 2.03 | 64 |
| 2001 | 2.26 | 55 |
| 2000 | 2.06 | 58 |
| 1999 | 2.13 | 55 |
| 1998 | 2.69 | 42 |
| 1997 | 2.27 | 55 |
| 1996 | 1.99 | 65 |
| 1995 | 2.1 | 66 |
| 1994 | 2.25 | 61 |
| 1993 | 1.92 | 82 |
| 1992 | 2.51 | 56 |
| 1991 | 2.69 | 55 |
| 1990 | 2.82 | 54 |
| 1989 | 2.16 | 71 |
| 1988 | 2.02 | 79 |
| 1987 | 2.38 | 63 |
| 1986 | 2.35 | 61 |