| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 102.78 | 4 |
| 2015 | 102.11 | 5 |
| 2014 | 101.52 | 5 |
| 2013 | 94.79 | 6 |
| 2012 | 89.31 | 7 |
| 2011 | 86.19 | 10 |
| 2010 | 85.46 | 10 |
| 2009 | 86.26 | 9 |
| 2008 | 94.09 | 7 |
| 2007 | 83.73 | 8 |
| 2006 | 84.99 | 6 |
| 2005 | 80.52 | 6 |
| 2004 | 79.76 | 7 |
| 2003 | 74.5 | 7 |
| 2002 | 67.57 | 7 |
| 2001 | 65.48 | 7 |
| 2000 | 58.83 | 7 |
| 1999 | 57.69 | 9 |
| 1998 | 50.43 | 10 |
| 1997 | 49.27 | 10 |
| 1996 | 51.88 | 10 |
| 1995 | 54.35 | 8 |
| 1994 | 50.07 | 13 |
| 1993 | 49.33 | 14 |
| 1992 | 49.35 | 14 |
| 1991 | 50.46 | 11 |
| 1990 | 59.34 | 7 |
| 1989 | 54.26 | 7 |
| 1988 | 52.73 | 7 |
| 1987 | 49.8 | 8 |
| 1986 | 46.39 | 7 |