| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 64.85 | 63 |
| 2015 | 77.33 | 50 |
| 2014 | 101.95 | 28 |
| 2013 | 110.31 | 24 |
| 2012 | 106.01 | 31 |
| 2011 | 111.05 | 24 |
| 2010 | 105.9 | 21 |
| 2009 | 95.79 | 22 |
| 2008 | 125.61 | 15 |
| 2007 | 115.61 | 20 |
| 2006 | 122.75 | 12 |
| 2005 | 122.96 | 9 |
| 2004 | 113.63 | 16 |
| 2003 | 110.96 | 13 |
| 2002 | 112.2 | 14 |
| 2001 | 110.1 | 18 |
| 2000 | 119.48 | 17 |
| 1999 | 121.75 | 13 |
| 1998 | 110.55 | 15 |
| 1997 | 132.46 | 12 |
| 1996 | 147.05 | 8 |
| 1995 | 133.82 | 10 |
| 1994 | 132.25 | 10 |
| 1993 | 145.84 | 6 |
| 1992 | 162.66 | 6 |
| 1991 | 165.24 | 6 |
| 1990 | 176.68 | 5 |
| 1989 | 154.39 | 5 |
| 1988 | 135.16 | 6 |
| 1987 | 151.65 | 3 |
| 1986 | 150.87 | 3 |