| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 5969 | 84 |
| 2015 | 6205 | 89 |
| 2014 | 6432 | 95 |
| 2013 | 6074 | 103 |
| 2012 | 5702 | 104 |
| 2011 | 5223 | 109 |
| 2010 | 4657 | 106 |
| 2009 | 4256 | 106 |
| 2008 | 4275 | 112 |
| 2007 | 3591 | 115 |
| 2006 | 3351 | 112 |
| 2005 | 3022 | 110 |
| 2004 | 2709 | 106 |
| 2003 | 2440 | 104 |
| 2002 | 2184 | 103 |
| 2001 | 1904 | 101 |
| 2000 | 1451 | 121 |
| 1999 | 1584 | 112 |
| 1998 | 2300 | 93 |
| 1997 | 2362 | 93 |
| 1996 | 2159 | 99 |
| 1995 | 2136 | 97 |
| 1994 | 2028 | 86 |
| 1993 | 1729 | 88 |
| 1992 | 1690 | 88 |
| 1991 | 1624 | 90 |
| 1990 | 1491 | 97 |
| 1989 | 1392 | 87 |
| 1988 | 1340 | 88 |
| 1987 | 1467 | 85 |
| 1986 | 1651 | 73 |