| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.99 | 41 |
| 2015 | 2.14 | 43 |
| 2014 | 1.9 | 54 |
| 2013 | 1.77 | 58 |
| 2012 | 1.8 | 56 |
| 2011 | 1.79 | 50 |
| 2010 | 1.83 | 56 |
| 2009 | 1.8 | 63 |
| 2008 | 1.75 | 66 |
| 2007 | 2 | 54 |
| 2006 | 1.92 | 57 |
| 2005 | 1.93 | 63 |
| 2004 | 1.87 | 69 |
| 2003 | 1.91 | 71 |
| 2002 | 1.9 | 68 |
| 2001 | 1.91 | 65 |
| 2000 | 1.83 | 67 |
| 1999 | 1.9 | 62 |
| 1998 | 2 | 60 |
| 1997 | 2.01 | 66 |
| 1996 | 1.93 | 68 |
| 1995 | 1.91 | 69 |
| 1994 | 2.03 | 68 |
| 1993 | 2.21 | 65 |
| 1992 | 1.99 | 76 |
| 1991 | 2.01 | 77 |
| 1990 | 2.34 | 65 |