| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 3362.97 | 31 |
| 2015 | 3326.98 | 32 |
| 2014 | 3055.3 | 38 |
| 2013 | 2885.86 | 39 |
| 2012 | 2793.73 | 38 |
| 2011 | 2360.02 | 45 |
| 2010 | 2188.88 | 44 |
| 2009 | 1889.82 | 44 |
| 2008 | 1628.18 | 51 |
| 2007 | 1304.79 | 53 |
| 2006 | 1074.84 | 53 |
| 2005 | 896.86 | 52 |
| 2004 | 788.45 | 52 |
| 2003 | 829.25 | 48 |
| 2002 | 878.51 | 43 |
| 2001 | 976.32 | 41 |
| 2000 | 998.39 | 41 |
| 1999 | 907.11 | 39 |
| 1998 | 848.29 | 41 |
| 1997 | 784.37 | 45 |
| 1996 | 676.3 | 46 |
| 1995 | 601.59 | 47 |
| 1994 | 518.98 | 47 |
| 1993 | 465.79 | 49 |
| 1992 | 418.56 | 47 |
| 1991 | 369.71 | 48 |
| 1990 | 431.3 | 46 |
| 1989 | 396.48 | 45 |
| 1988 | 350.45 | 47 |
| 1987 | 405.08 | 38 |
| 1986 | 358.8 | 37 |