| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.85 | 102 |
| 2015 | 1.86 | 102 |
| 2014 | 1.87 | 98 |
| 2013 | 1.89 | 97 |
| 2012 | 1.91 | 97 |
| 2011 | 1.92 | 97 |
| 2010 | 1.95 | 97 |
| 2009 | 1.99 | 101 |
| 2008 | 2.01 | 102 |
| 2007 | 2.01 | 102 |
| 2006 | 1.99 | 105 |
| 2005 | 1.98 | 106 |
| 2004 | 1.96 | 101 |
| 2003 | 1.97 | 106 |
| 2002 | 2.22 | 96 |
| 2001 | 2.59 | 85 |
| 2000 | 2.67 | 78 |
| 1999 | 2.76 | 75 |
| 1998 | 2.84 | 76 |
| 1997 | 2.91 | 72 |
| 1996 | 2.98 | 74 |
| 1995 | 3.05 | 71 |
| 1994 | 3.12 | 73 |
| 1993 | 3.18 | 74 |
| 1992 | 3.24 | 77 |
| 1991 | 3.47 | 75 |
| 1990 | 3.8 | 66 |
| 1989 | 3.85 | 69 |
| 1988 | 3.9 | 75 |
| 1987 | 3.94 | 75 |
| 1986 | 3.99 | 76 |