| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 4552 | 58 |
| 2015 | 4565 | 73 |
| 2014 | 4599 | 71 |
| 2013 | 4610 | 73 |
| 2012 | 4081 | 77 |
| 2011 | 3991 | 77 |
| 2010 | 4011 | 85 |
| 2009 | 3872 | 75 |
| 2008 | 3990 | 75 |
| 2007 | 3780 | 75 |
| 2006 | 3605 | 73 |
| 2005 | 2247 | 88 |
| 2004 | 6986 | 48 |
| 2003 | 4062 | 63 |
| 2002 | 3498 | 65 |
| 2001 | 1568 | 88 |
| 2000 | 861 | 100 |
| 1999 | 1205 | 86 |
| 1998 | 1324 | 84 |
| 1997 | 913 | 95 |
| 1996 | 903 | 95 |
| 1995 | 477 | 106 |
| 1994 | 152 | 120 |
| 1993 | 233 | 114 |
| 1992 | 375 | 101 |
| 1991 | 384 | 98 |
| 1990 | 285 | 98 |
| 1989 | 388 | 82 |
| 1988 | 429 | 78 |
| 1987 | 449 | 78 |
| 1986 | 356 | 82 |