| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 109.27 | 15 |
| 2015 | 98.73 | 21 |
| 2014 | 85.64 | 26 |
| 2013 | 85.46 | 25 |
| 2012 | 77.96 | 31 |
| 2011 | 75.84 | 35 |
| 2010 | 73.24 | 41 |
| 2009 | 80.66 | 34 |
| 2008 | 75.4 | 39 |
| 2007 | 60.86 | 53 |
| 2006 | 57.14 | 56 |
| 2005 | 54.2 | 56 |
| 2004 | 54.23 | 56 |
| 2003 | 52.29 | 61 |
| 2002 | 50.83 | 61 |
| 2001 | 51.53 | 56 |
| 2000 | 51.34 | 50 |
| 1999 | 47.93 | 59 |
| 1998 | 44.78 | 60 |
| 1997 | 43.2 | 61 |
| 1996 | 37.58 | 66 |
| 1995 | 38.03 | 66 |
| 1994 | 36.24 | 70 |
| 1993 | 34.84 | 73 |
| 1992 | 32.06 | 79 |
| 1991 | 32.82 | 73 |
| 1990 | 32.01 | 69 |
| 1989 | 31.23 | 70 |
| 1988 | 29.97 | 74 |
| 1987 | 29.54 | 73 |
| 1986 | 27.66 | 79 |