| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 100.67 | 44 |
| 2015 | 102.11 | 56 |
| 2014 | 102.73 | 61 |
| 2013 | 103.8 | 61 |
| 2012 | 105 | 67 |
| 2011 | 104.82 | 65 |
| 2010 | 98.68 | 65 |
| 2009 | 86.81 | 82 |
| 2008 | 102.13 | 69 |
| 2007 | 100.82 | 67 |
| 2006 | 98.23 | 65 |
| 2005 | 94.16 | 73 |
| 2004 | 90.93 | 76 |
| 2003 | 86.49 | 75 |
| 2002 | 86.96 | 70 |
| 2001 | 87.64 | 66 |
| 2000 | 85.47 | 72 |
| 1999 | 78.38 | 83 |
| 1998 | 77.09 | 88 |
| 1997 | 74.99 | 91 |
| 1996 | 70.21 | 92 |
| 1995 | 68.39 | 97 |
| 1994 | 66.12 | 90 |
| 1993 | 63.39 | 85 |
| 1992 | 67.76 | 75 |
| 1991 | 70.19 | 70 |
| 1990 | 71.63 | 65 |
| 1989 | 70.68 | 61 |
| 1988 | 66.69 | 60 |
| 1987 | 62.98 | 61 |
| 1986 | 64.14 | 61 |