| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 2730 | 73 |
| 2015 | 2673 | 93 |
| 2014 | 2578 | 94 |
| 2013 | 2528 | 98 |
| 2012 | 2491 | 100 |
| 2011 | 2467 | 99 |
| 2010 | 2432 | 109 |
| 2009 | 2403 | 98 |
| 2008 | 2466 | 97 |
| 2007 | 2417 | 96 |
| 2006 | 2345 | 91 |
| 2005 | 2292 | 86 |
| 2004 | 2249 | 85 |
| 2003 | 2217 | 84 |
| 2002 | 2186 | 82 |
| 2001 | 2165 | 77 |
| 2000 | 2135 | 77 |
| 1999 | 2111 | 72 |
| 1998 | 2085 | 72 |
| 1997 | 2038 | 70 |
| 1996 | 2004 | 72 |
| 1995 | 1994 | 72 |
| 1994 | 1939 | 70 |
| 1993 | 1893 | 68 |
| 1992 | 1858 | 64 |
| 1991 | 1816 | 64 |
| 1990 | 1781 | 63 |
| 1989 | 1787 | 55 |
| 1988 | 1776 | 52 |
| 1987 | 1746 | 52 |
| 1986 | 1720 | 49 |