| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 5.136 | 34 |
| 2015 | 3.907 | 66 |
| 2014 | 4.063 | 81 |
| 2013 | 4.576 | 73 |
| 2012 | 4.697 | 73 |
| 2011 | 3.556 | 97 |
| 2010 | 4.096 | 95 |
| 2009 | 1.157 | 92 |
| 2008 | 3.363 | 107 |
| 2007 | 6.758 | 82 |
| 2006 | 5.775 | 88 |
| 2005 | 5.763 | 78 |
| 2004 | 7.18 | 51 |
| 2003 | 5.962 | 50 |
| 2002 | 5.059 | 63 |
| 2001 | 3.018 | 96 |
| 2000 | 3.802 | 103 |
| 1999 | 23.568 | 1 |
| 1998 | 7.057 | 22 |
| 1997 | 4.654 | 76 |
| 1996 | 2.752 | 100 |
| 1995 | 4.15 | 61 |
| 1994 | 2.002 | 86 |
| 1993 | -2.155 | 114 |
| 1992 | 1.553 | 88 |
| 1991 | 1.482 | 78 |
| 1990 | 1.172 | 81 |
| 1989 | 3.392 | 61 |
| 1988 | 3.876 | 54 |
| 1987 | 4.243 | 51 |
| 1986 | 3.464 | 55 |