| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 69.19 | 54 |
| 2015 | 70.68 | 61 |
| 2014 | 79.06 | 57 |
| 2013 | 78.89 | 58 |
| 2012 | 79.51 | 62 |
| 2011 | 79.95 | 64 |
| 2010 | 79.86 | 58 |
| 2009 | 75.77 | 52 |
| 2008 | 76.27 | 72 |
| 2007 | 76.05 | 67 |
| 2006 | 78.32 | 62 |
| 2005 | 84.19 | 49 |
| 2004 | 85.93 | 43 |
| 2003 | 89.26 | 38 |
| 2002 | 109.94 | 16 |
| 2001 | 122.24 | 14 |
| 2000 | 128.64 | 13 |
| 1999 | 119.46 | 14 |
| 1998 | 119.32 | 12 |
| 1997 | 110 | 18 |
| 1996 | 108.96 | 18 |
| 1995 | 111.32 | 15 |
| 1994 | 104.29 | 16 |
| 1993 | 95.59 | 17 |
| 1992 | 90.77 | 17 |
| 1991 | 90.28 | 21 |
| 1990 | 89.99 | 23 |
| 1989 | 96.97 | 19 |
| 1988 | 90.69 | 23 |
| 1987 | 87.3 | 20 |
| 1986 | 84.47 | 21 |