| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 110.06 | 38 |
| 2014 | 119.23 | 36 |
| 2013 | 126.15 | 37 |
| 2012 | 125.28 | 38 |
| 2011 | 124.19 | 37 |
| 2010 | 121.73 | 33 |
| 2009 | 109.25 | 41 |
| 2008 | 130.72 | 35 |
| 2007 | 110.63 | 52 |
| 2006 | 117.82 | 46 |
| 2005 | 118.25 | 40 |
| 2004 | 124.23 | 32 |
| 2003 | 128.11 | 25 |
| 2002 | 125.41 | 25 |
| 2001 | 129.4 | 25 |
| 2000 | 135.42 | 23 |
| 1999 | 122.44 | 26 |
| 1998 | 119.11 | 27 |
| 1997 | 119.48 | 28 |
| 1996 | 121.69 | 24 |
| 1995 | 118.14 | 25 |
| 1994 | 115.87 | 26 |
| 1993 | 111.83 | 27 |
| 1992 | 106.83 | 33 |
| 1991 | 117.82 | 23 |
| 1990 | 129.5 | 19 |
| 1989 | 123.02 | 21 |
| 1988 | 105.44 | 26 |
| 1987 | 87.36 | 44 |
| 1986 | 81.14 | 49 |