| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 102.51 | 40 |
| 2015 | 109.36 | 40 |
| 2014 | 104.93 | 54 |
| 2013 | 121.87 | 44 |
| 2012 | 132.49 | 32 |
| 2011 | 118.62 | 44 |
| 2010 | 111.92 | 47 |
| 2009 | 97.7 | 56 |
| 2008 | 112.99 | 54 |
| 2007 | 103.01 | 60 |
| 2006 | 98.44 | 64 |
| 2005 | 113.2 | 47 |
| 2004 | 92.26 | 73 |
| 2003 | 68.26 | 116 |
| 2002 | 70.61 | 105 |
| 2001 | 76.03 | 90 |
| 2000 | 75.26 | 92 |
| 1999 | 63.86 | 105 |
| 1998 | 69.85 | 100 |
| 1997 | 84.63 | 72 |
| 1996 | 94.71 | 49 |
| 1995 | 98.57 | 39 |
| 1994 | 84.3 | 59 |
| 1993 | 61.99 | 87 |
| 1992 | 57.12 | 96 |
| 1991 | 75.68 | 55 |
| 1990 | 106.37 | 30 |
| 1989 | 106.57 | 31 |
| 1988 | 113.3 | 21 |
| 1987 | 115.67 | 20 |
| 1986 | 135.47 | 10 |