| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 4549 | 59 |
| 2015 | 4585 | 72 |
| 2014 | 4582 | 72 |
| 2013 | 4621 | 72 |
| 2012 | 4600 | 73 |
| 2011 | 4503 | 72 |
| 2010 | 4345 | 81 |
| 2009 | 4241 | 70 |
| 2008 | 4415 | 70 |
| 2007 | 4423 | 68 |
| 2006 | 4208 | 68 |
| 2005 | 3919 | 66 |
| 2004 | 3740 | 66 |
| 2003 | 3565 | 66 |
| 2002 | 3509 | 64 |
| 2001 | 3442 | 60 |
| 2000 | 3357 | 60 |
| 1999 | 3272 | 56 |
| 1998 | 3264 | 56 |
| 1997 | 3257 | 56 |
| 1996 | 3208 | 56 |
| 1995 | 3129 | 56 |
| 1994 | 3017 | 54 |
| 1993 | 2969 | 52 |
| 1992 | 2987 | 49 |
| 1991 | 3107 | 45 |
| 1990 | 3200 | 46 |
| 1989 | 3182 | 41 |
| 1988 | 3165 | 39 |
| 1987 | 3069 | 38 |
| 1986 | 3019 | 38 |