| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 140.76 | 9 |
| 2015 | 139.96 | 10 |
| 2014 | 155.01 | 7 |
| 2013 | 158.29 | 5 |
| 2012 | 153.41 | 6 |
| 2011 | 143.91 | 9 |
| 2010 | 130.74 | 10 |
| 2009 | 134.89 | 9 |
| 2008 | 131.93 | 12 |
| 2007 | 120.63 | 14 |
| 2006 | 110.59 | 27 |
| 2005 | 111.81 | 21 |
| 2004 | 110.32 | 19 |
| 2003 | 95.87 | 31 |
| 2002 | 86.34 | 40 |
| 2001 | 82.96 | 45 |
| 2000 | 81.32 | 50 |
| 1999 | 80.76 | 45 |
| 1998 | 87.78 | 28 |
| 1997 | 94.53 | 25 |
| 1996 | 92.29 | 28 |
| 1995 | 79.31 | 36 |
| 1994 | 82.92 | 29 |
| 1993 | 83.8 | 23 |
| 1992 | 77.74 | 28 |
| 1991 | 74.06 | 32 |
| 1990 | 68.52 | 43 |
| 1989 | 66.58 | 43 |
| 1988 | 56.68 | 56 |
| 1987 | 53.88 | 58 |
| 1986 | 50.27 | 64 |