| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 13793 | 51 |
| 2015 | 13653 | 54 |
| 2014 | 14817 | 57 |
| 2013 | 15941 | 56 |
| 2012 | 15432 | 55 |
| 2011 | 14706 | 58 |
| 2010 | 12860 | 62 |
| 2009 | 10243 | 68 |
| 2008 | 10781 | 71 |
| 2007 | 10527 | 69 |
| 2006 | 9485 | 68 |
| 2005 | 7615 | 71 |
| 2004 | 6211 | 70 |
| 2003 | 4788 | 75 |
| 2002 | 4464 | 72 |
| 2001 | 4596 | 72 |
| 2000 | 5101 | 68 |
| 1999 | 4986 | 69 |
| 1998 | 5479 | 64 |
| 1997 | 5781 | 60 |
| 1996 | 5383 | 61 |
| 1995 | 5137 | 60 |
| 1994 | 4046 | 60 |
| 1993 | 3551 | 62 |
| 1992 | 3362 | 62 |
| 1991 | 2811 | 67 |
| 1990 | 2501 | 72 |
| 1989 | 2294 | 68 |
| 1988 | 2033 | 73 |
| 1987 | 1767 | 74 |
| 1986 | 1525 | 77 |