| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2841.4 | 8 |
| 2015 | 2854.6 | 10 |
| 2014 | 2944.7 | 10 |
| 2013 | 3008.5 | 10 |
| 2012 | 2966.9 | 10 |
| 2011 | 2895.4 | 11 |
| 2010 | 2855.4 | 11 |
| 2009 | 2898.9 | 10 |
| 2008 | 2916.4 | 10 |
| 2007 | 2820.5 | 10 |
| 2006 | 2746.3 | 10 |
| 2005 | 2684.6 | 10 |
| 2004 | 2647.5 | 10 |
| 2003 | 2593.1 | 10 |
| 2002 | 2532.3 | 10 |
| 2001 | 2468.4 | 10 |
| 2000 | 2488 | 10 |
| 1999 | 2439.3 | 10 |
| 1998 | 2365.9 | 9 |
| 1997 | 2342.5 | 9 |
| 1996 | 2400.1 | 9 |
| 1995 | 2327.9 | 9 |
| 1994 | 2353.8 | 9 |
| 1993 | 2424.1 | 9 |
| 1992 | 2589.9 | 9 |
| 1991 | 2936.4 | 7 |
| 1990 | 3310.4 | 7 |