| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 113.04 | 29 |
| 2015 | 113.83 | 35 |
| 2014 | 112.54 | 47 |
| 2013 | 104.86 | 59 |
| 2012 | 112.22 | 52 |
| 2011 | 113.19 | 53 |
| 2010 | 97.88 | 68 |
| 2009 | 87.18 | 77 |
| 2008 | 111.57 | 56 |
| 2007 | 106.09 | 54 |
| 2006 | 92.55 | 82 |
| 2005 | 85.84 | 91 |
| 2004 | 80.87 | 98 |
| 2003 | 71.07 | 106 |
| 2002 | 71.53 | 104 |
| 2001 | 71.48 | 100 |
| 2000 | 80.16 | 86 |
| 1999 | 94.33 | 54 |
| 1998 | 97.29 | 46 |
| 1997 | 88.16 | 66 |
| 1996 | 66.7 | 99 |
| 1995 | 75.78 | 80 |
| 1994 | 86.6 | 57 |
| 1993 | 101.44 | 39 |
| 1992 | 107.7 | 32 |
| 1991 | 48.79 | 112 |
| 1990 | 61.68 | 83 |