| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.85 | 47 |
| 2015 | 1.89 | 52 |
| 2014 | 1.89 | 56 |
| 2013 | 1.89 | 52 |
| 2012 | 1.99 | 48 |
| 2011 | 2.08 | 42 |
| 2010 | 2.95 | 27 |
| 2009 | 2.54 | 39 |
| 2008 | 1.46 | 85 |
| 2007 | 2.19 | 49 |
| 2006 | 1.96 | 54 |
| 2005 | 2 | 58 |
| 2004 | 2.08 | 54 |
| 2003 | 2.36 | 50 |
| 2002 | 2.52 | 47 |
| 2001 | 2.83 | 41 |
| 2000 | 3.44 | 30 |
| 1999 | 3.73 | 28 |
| 1998 | 2.99 | 35 |
| 1997 | 2.88 | 41 |
| 1996 | 3 | 35 |
| 1995 | 3.43 | 31 |
| 1994 | 2.94 | 39 |
| 1993 | 2.65 | 51 |
| 1992 | 2.92 | 43 |
| 1991 | 3.17 | 40 |
| 1990 | 4.05 | 27 |
| 1989 | 4.56 | 23 |
| 1988 | 3.6 | 36 |
| 1987 | 4.5 | 25 |
| 1986 | 4.19 | 27 |