| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 74.29 | 45 |
| 2015 | 75.42 | 54 |
| 2014 | 80.07 | 55 |
| 2013 | 78.42 | 61 |
| 2012 | 78.51 | 63 |
| 2011 | 80.07 | 63 |
| 2010 | 84.71 | 45 |
| 2009 | 96.08 | 21 |
| 2008 | 95.63 | 43 |
| 2007 | 103.19 | 32 |
| 2006 | 108.47 | 30 |
| 2005 | 111.07 | 24 |
| 2004 | 139.85 | 9 |
| 2003 | 143.64 | 9 |
| 2002 | 138.53 | 11 |
| 2001 | 141.53 | 9 |
| 2000 | 112.54 | 19 |
| 1999 | 129.53 | 10 |
| 1998 | 130.38 | 10 |
| 1997 | 118.13 | 14 |
| 1996 | 119.67 | 14 |
| 1995 | 110.3 | 16 |
| 1994 | 120.34 | 11 |
| 1993 | 114.43 | 10 |
| 1992 | 117.14 | 10 |
| 1991 | 113.22 | 11 |
| 1990 | 109.36 | 12 |
| 1989 | 155.69 | 4 |
| 1988 | 142.19 | 4 |
| 1987 | 146.88 | 4 |
| 1986 | 140.71 | 5 |