| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 5013 | 6 |
| 2015 | 5058 | 8 |
| 2014 | 5805 | 6 |
| 2013 | 5810 | 6 |
| 2012 | 5687 | 6 |
| 2011 | 5965 | 6 |
| 2010 | 5238 | 6 |
| 2009 | 4848 | 6 |
| 2008 | 6162 | 6 |
| 2007 | 5596 | 5 |
| 2006 | 4959 | 5 |
| 2005 | 4634 | 5 |
| 2004 | 4521 | 5 |
| 2003 | 3920 | 5 |
| 2002 | 3317 | 4 |
| 2001 | 3234 | 4 |
| 2000 | 3276 | 4 |
| 1999 | 3255 | 4 |
| 1998 | 3206 | 4 |
| 1997 | 3021 | 4 |
| 1996 | 3055 | 4 |
| 1995 | 3012 | 4 |
| 1994 | 2506 | 4 |
| 1993 | 2216 | 4 |
| 1992 | 2359 | 4 |
| 1991 | 2171 | 4 |
| 1990 | 2166 | 4 |
| 1989 | 1794 | 4 |
| 1988 | 1678 | 4 |
| 1987 | 1484 | 4 |
| 1986 | 1249 | 4 |