| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 9322.59 | 16 |
| 2015 | 8612.56 | 16 |
| 2014 | 8908.15 | 17 |
| 2013 | 9125.24 | 17 |
| 2012 | 9178.7 | 16 |
| 2011 | 8929.69 | 17 |
| 2010 | 7550.94 | 18 |
| 2009 | 5395.8 | 18 |
| 2008 | 5102.29 | 23 |
| 2007 | 4322.17 | 21 |
| 2006 | 3645.71 | 23 |
| 2005 | 2858.69 | 26 |
| 2004 | 2568.37 | 25 |
| 2003 | 2347.72 | 23 |
| 2002 | 1956.61 | 24 |
| 2001 | 1604.47 | 29 |
| 2000 | 1650.21 | 28 |
| 1999 | 1400.01 | 30 |
| 1998 | 954.46 | 37 |
| 1997 | 2157.49 | 22 |
| 1996 | 2273.7 | 23 |
| 1995 | 2021.32 | 23 |
| 1994 | 1768.92 | 23 |
| 1993 | 1580.07 | 24 |
| 1992 | 1280.27 | 28 |
| 1991 | 1166.22 | 29 |
| 1990 | 1061.41 | 31 |
| 1989 | 944.51 | 29 |
| 1988 | 843 | 29 |
| 1987 | 759.3 | 29 |
| 1986 | 799.54 | 25 |