| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 49.55 | 102 |
| 2015 | 52.32 | 105 |
| 2014 | 69.22 | 74 |
| 2013 | 75.72 | 67 |
| 2012 | 82.16 | 59 |
| 2011 | 84.08 | 57 |
| 2010 | 81.56 | 53 |
| 2009 | 84.1 | 36 |
| 2008 | 100.85 | 36 |
| 2007 | 96.04 | 41 |
| 2006 | 97.25 | 38 |
| 2005 | 114.98 | 16 |
| 2004 | 98.3 | 33 |
| 2003 | 105.63 | 18 |
| 2002 | 96.72 | 27 |
| 2001 | 108.69 | 19 |
| 2000 | 120.06 | 16 |
| 1999 | 134.34 | 8 |
| 1998 | 87.23 | 29 |
| 1997 | 99.42 | 22 |
| 1996 | 94.8 | 24 |
| 1995 | 101.4 | 17 |
| 1994 | 110.17 | 14 |
| 1993 | 98.99 | 14 |
| 1992 | 101.03 | 14 |
| 1991 | 39.25 | 95 |
| 1990 | 54.73 | 62 |
| 1989 | 43.41 | 91 |
| 1988 | 58.16 | 50 |
| 1987 | 51.93 | 63 |
| 1986 | 36.17 | 98 |