| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 120.86 | 12 |
| 2015 | 116.88 | 15 |
| 2014 | 117.6 | 14 |
| 2013 | 113.91 | 15 |
| 2012 | 117.02 | 14 |
| 2011 | 115.76 | 15 |
| 2010 | 113.67 | 16 |
| 2009 | 114.36 | 16 |
| 2008 | 111.57 | 17 |
| 2007 | 109.02 | 18 |
| 2006 | 99.47 | 18 |
| 2005 | 92.02 | 25 |
| 2004 | 84.32 | 26 |
| 2003 | 82.55 | 26 |
| 2002 | 81.96 | 28 |
| 2001 | 77.54 | 30 |
| 2000 | 70.91 | 27 |
| 1999 | 66.14 | 33 |
| 1998 | 60.99 | 35 |
| 1997 | 61.93 | 35 |
| 1996 | 52.84 | 44 |
| 1995 | 55.96 | 38 |
| 1994 | 53.18 | 43 |
| 1993 | 53.72 | 44 |
| 1992 | 50.9 | 43 |
| 1991 | 47.7 | 44 |
| 1990 | 46.15 | 46 |
| 1989 | 42.31 | 50 |
| 1988 | 39.9 | 54 |
| 1987 | 40.17 | 52 |
| 1986 | 37.53 | 53 |