| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 932.7 | 60 |
| 2015 | 910.31 | 63 |
| 2014 | 1335.03 | 59 |
| 2013 | 1833.1 | 56 |
| 2012 | 1757.81 | 55 |
| 2011 | 1631.6 | 56 |
| 2010 | 1360.13 | 55 |
| 2009 | 1172.28 | 54 |
| 2008 | 1799.92 | 46 |
| 2007 | 1427.19 | 49 |
| 2006 | 1077.53 | 52 |
| 2005 | 861.42 | 53 |
| 2004 | 648.83 | 56 |
| 2003 | 501.33 | 57 |
| 2002 | 423.93 | 56 |
| 2001 | 380.09 | 57 |
| 2000 | 312.62 | 60 |
| 1999 | 315.81 | 58 |
| 1998 | 418.83 | 55 |
| 1997 | 501.5 | 50 |
| 1996 | 445.58 | 54 |
| 1995 | 482.14 | 50 |
| 1994 | 525.5 | 46 |
| 1993 | 656.49 | 37 |
| 1992 | 739.42 | 35 |
| 1991 | 774.65 | 35 |
| 1990 | 814.57 | 34 |
| 1989 | 827.09 | 30 |
| 1988 | 747.04 | 31 |
| 1987 | 640.88 | 32 |