| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 105.71 | 35 |
| 2015 | 107.78 | 45 |
| 2014 | 120.13 | 34 |
| 2013 | 130.29 | 28 |
| 2012 | 145.26 | 23 |
| 2011 | 140.77 | 24 |
| 2010 | 131.3 | 26 |
| 2009 | 124.97 | 23 |
| 2008 | 138.59 | 25 |
| 2007 | 129.15 | 37 |
| 2006 | 128.04 | 32 |
| 2005 | 203.83 | 9 |
| 2004 | 201.45 | 9 |
| 2003 | 189.6 | 9 |
| 2002 | 198.23 | 10 |
| 2001 | 206.41 | 6 |
| 2000 | 206.77 | 7 |
| 1999 | 201.06 | 7 |
| 1998 | 203.84 | 7 |
| 1997 | 209.14 | 6 |
| 1996 | 211.34 | 5 |
| 1995 | 213.33 | 5 |
| 1994 | 222.88 | 3 |
| 1993 | 254.61 | 2 |
| 1992 | 280.36 | 2 |
| 1991 | 233.94 | 3 |
| 1990 | 142.57 | 13 |
| 1989 | 139.87 | 12 |
| 1988 | 131.56 | 14 |
| 1987 | 170.33 | 7 |
| 1986 | 99.52 | 30 |