| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2 | 40 |
| 2015 | 1.98 | 48 |
| 2014 | 1.8 | 60 |
| 2013 | 1.68 | 60 |
| 2012 | 1.7 | 58 |
| 2011 | 1.83 | 47 |
| 2010 | 1.95 | 50 |
| 2009 | 1.93 | 56 |
| 2008 | 1.88 | 57 |
| 2007 | 1.89 | 59 |
| 2006 | 1.89 | 59 |
| 2005 | 1.88 | 65 |
| 2004 | 1.89 | 68 |
| 2003 | 1.91 | 70 |
| 2002 | 1.94 | 65 |
| 2001 | 1.93 | 63 |
| 2000 | 1.9 | 61 |
| 1999 | 1.94 | 60 |
| 1998 | 1.92 | 63 |
| 1997 | 1.92 | 68 |
| 1996 | 1.98 | 66 |
| 1995 | 2.08 | 67 |
| 1994 | 2.18 | 63 |
| 1993 | 2.23 | 63 |
| 1992 | 2.21 | 65 |
| 1991 | 2.17 | 73 |
| 1990 | 2.12 | 75 |
| 1989 | 2.16 | 69 |
| 1988 | 2.3 | 67 |
| 1987 | 2.52 | 59 |
| 1986 | 2.64 | 52 |