| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 105.35 | 18 |
| 2015 | 101.93 | 23 |
| 2014 | 101.89 | 29 |
| 2013 | 96.35 | 39 |
| 2012 | 89.46 | 46 |
| 2011 | 88.64 | 51 |
| 2010 | 85.05 | 43 |
| 2009 | 91.55 | 30 |
| 2008 | 88.14 | 53 |
| 2007 | 73.7 | 73 |
| 2006 | 69.32 | 77 |
| 2005 | 64 | 83 |
| 2004 | 63.91 | 82 |
| 2003 | 65.74 | 70 |
| 2002 | 75.61 | 53 |
| 2001 | 76.86 | 52 |
| 2000 | 73.43 | 60 |
| 1999 | 74.47 | 52 |
| 1998 | 75.26 | 49 |
| 1997 | 75.34 | 50 |
| 1996 | 78.27 | 43 |
| 1995 | 76.73 | 39 |
| 1994 | 74.79 | 38 |
| 1993 | 79.73 | 26 |
| 1992 | 76.09 | 36 |
| 1991 | 78.4 | 30 |
| 1990 | 80.16 | 31 |
| 1989 | 93.47 | 22 |
| 1988 | 92.84 | 20 |
| 1987 | 95.39 | 15 |
| 1986 | 102.55 | 13 |