| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 24.28 | 1 |
| 2015 | 21.169 | 1 |
| 2014 | 20.418 | 1 |
| 2013 | 14.854 | 6 |
| 2012 | 12.023 | 10 |
| 2011 | 10.679 | 17 |
| 2010 | 9.167 | 21 |
| 2009 | 11.604 | 16 |
| 2008 | 11.049 | 19 |
| 2007 | 7.972 | 45 |
| 2006 | 6.421 | 57 |
| 2005 | 3.762 | 89 |
| 2004 | 2.615 | 112 |
| 2003 | 10.161 | 27 |
| 2002 | 39.248 | 4 |
| 2001 | 16.164 | 13 |
| 2000 | 8.338 | 60 |
| 1999 | 8.047 | 71 |
| 1998 | 7.562 | 83 |
| 1997 | 6.967 | 85 |
| 1996 | 7.357 | 81 |
| 1995 | 11.903 | 52 |
| 1994 | 8.083 | 68 |
| 1993 | 11.341 | 48 |
| 1992 | 16.779 | 30 |
| 1991 | 61.676 | 7 |
| 1990 | 1517.876 | 3 |
| 1989 | 17235.815 | 1 |
| 1988 | 371.846 | 3 |
| 1987 | 175.946 | 3 |
| 1986 | 94.686 | 3 |