| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 6046 | 83 |
| 2015 | 6030 | 91 |
| 2014 | 6491 | 93 |
| 2013 | 6583 | 100 |
| 2012 | 6388 | 98 |
| 2011 | 5772 | 101 |
| 2010 | 5022 | 104 |
| 2009 | 4166 | 108 |
| 2008 | 4209 | 113 |
| 2007 | 3611 | 113 |
| 2006 | 3171 | 114 |
| 2005 | 2755 | 115 |
| 2004 | 2448 | 114 |
| 2003 | 2180 | 113 |
| 2002 | 2059 | 109 |
| 2001 | 1981 | 99 |
| 2000 | 1997 | 102 |
| 1999 | 1963 | 103 |
| 1998 | 2202 | 95 |
| 1997 | 2342 | 94 |
| 1996 | 2261 | 96 |
| 1995 | 2218 | 94 |
| 1994 | 1900 | 90 |
| 1993 | 1516 | 94 |
| 1992 | 1589 | 91 |
| 1991 | 1556 | 93 |
| 1990 | 1210 | 102 |
| 1989 | 1053 | 97 |
| 1988 | 738 | 115 |
| 1987 | 1012 | 94 |
| 1986 | 762 | 101 |