| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 2861 | 123 |
| 2015 | 2806 | 131 |
| 2014 | 3148 | 129 |
| 2013 | 3167 | 133 |
| 2012 | 3159 | 133 |
| 2011 | 3275 | 133 |
| 2010 | 2966 | 130 |
| 2009 | 2643 | 130 |
| 2008 | 2698 | 134 |
| 2007 | 2393 | 134 |
| 2006 | 2047 | 134 |
| 2005 | 1886 | 126 |
| 2004 | 1788 | 126 |
| 2003 | 1581 | 126 |
| 2002 | 1354 | 125 |
| 2001 | 1363 | 121 |
| 2000 | 1470 | 118 |
| 1999 | 1478 | 117 |
| 1998 | 1473 | 118 |
| 1997 | 1462 | 114 |
| 1996 | 1427 | 117 |
| 1995 | 1390 | 115 |
| 1994 | 1335 | 103 |
| 1993 | 1177 | 107 |
| 1992 | 1263 | 101 |
| 1991 | 1253 | 104 |
| 1990 | 1080 | 108 |
| 1989 | 1011 | 99 |
| 1988 | 1066 | 96 |
| 1987 | 961 | 98 |
| 1986 | 892 | 93 |