| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 105.67 | 16 |
| 2015 | 101.16 | 18 |
| 2014 | 95.69 | 18 |
| 2013 | 94.7 | 20 |
| 2012 | 96.17 | 19 |
| 2011 | 83.8 | 26 |
| 2010 | 82.82 | 29 |
| 2009 | 81.48 | 33 |
| 2008 | 79 | 34 |
| 2007 | 81.35 | 31 |
| 2006 | 79.7 | 33 |
| 2005 | 75.55 | 32 |
| 2004 | 70.8 | 38 |
| 2003 | 71.13 | 36 |
| 2002 | 68.02 | 40 |
| 2001 | 61.17 | 43 |
| 2000 | 59.37 | 39 |
| 1999 | 76.94 | 24 |
| 1998 | 73.35 | 24 |
| 1997 | 74.76 | 21 |
| 1996 | 74.12 | 20 |
| 1995 | 73.55 | 20 |
| 1994 | 63.37 | 27 |
| 1993 | 64.85 | 27 |
| 1992 | 68.54 | 22 |
| 1991 | 63.88 | 25 |
| 1990 | 60.6 | 27 |
| 1989 | 55.31 | 34 |
| 1988 | 54.1 | 34 |
| 1987 | 55.94 | 30 |
| 1986 | 48.67 | 34 |