| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 104.81 | 37 |
| 2015 | 107.08 | 46 |
| 2014 | 100.69 | 66 |
| 2013 | 95.15 | 79 |
| 2012 | 91.79 | 86 |
| 2011 | 106.24 | 61 |
| 2010 | 98.14 | 66 |
| 2009 | 94.42 | 62 |
| 2008 | 101.83 | 70 |
| 2007 | 95.21 | 78 |
| 2006 | 96.1 | 71 |
| 2005 | 102.12 | 57 |
| 2004 | 114.91 | 44 |
| 2003 | 112.93 | 43 |
| 2002 | 105.79 | 47 |
| 2001 | 109.29 | 42 |
| 2000 | 119.86 | 36 |
| 1999 | 101.95 | 41 |
| 1998 | 86.05 | 72 |
| 1997 | 84.24 | 75 |
| 1996 | 93.86 | 50 |
| 1995 | 97.23 | 42 |
| 1994 | 73.94 | 74 |
| 1993 | 52.07 | 112 |
| 1992 | 45.97 | 121 |
| 1991 | 50.06 | 107 |
| 1990 | 56.36 | 95 |
| 1989 | 64.22 | 70 |