| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2012 | 117.65 | 47 |
| 2011 | 118.23 | 45 |
| 2010 | 120.79 | 34 |
| 2009 | 119.84 | 26 |
| 2008 | 104.43 | 66 |
| 2007 | 114.09 | 48 |
| 2006 | 108.01 | 52 |
| 2005 | 112.8 | 48 |
| 2004 | 121.18 | 38 |
| 2003 | 118.92 | 34 |
| 2002 | 122.46 | 30 |
| 2001 | 158.26 | 12 |
| 2000 | 176.44 | 10 |
| 1999 | 139.63 | 14 |
| 1998 | 103.47 | 39 |
| 1997 | 111.23 | 33 |
| 1996 | 149.99 | 13 |
| 1995 | 168.18 | 9 |
| 1994 | 170.26 | 8 |
| 1993 | 146.07 | 12 |
| 1992 | 105.31 | 35 |
| 1991 | 66.1 | 75 |