| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2948.41 | 38 |
| 2015 | 3174.07 | 33 |
| 2014 | 3508.51 | 34 |
| 2013 | 3666.24 | 34 |
| 2012 | 3963.28 | 31 |
| 2011 | 4164.19 | 29 |
| 2010 | 3753.49 | 30 |
| 2009 | 2959.36 | 32 |
| 2008 | 2867.7 | 34 |
| 2007 | 2994.16 | 30 |
| 2006 | 2716.38 | 29 |
| 2005 | 2577.73 | 28 |
| 2004 | 2285.94 | 29 |
| 2003 | 1752.57 | 29 |
| 2002 | 1154.82 | 36 |
| 2001 | 1215.16 | 36 |
| 2000 | 1363.62 | 30 |
| 1999 | 1366.32 | 31 |
| 1998 | 1377.74 | 30 |
| 1997 | 1525.86 | 30 |
| 1996 | 1476.08 | 31 |
| 1995 | 1554.6 | 27 |
| 1994 | 1397.52 | 26 |
| 1993 | 1343.1 | 26 |
| 1992 | 1345.45 | 26 |
| 1991 | 1239.43 | 27 |
| 1990 | 1155.53 | 30 |
| 1989 | 1289.03 | 22 |
| 1988 | 1183.32 | 23 |
| 1987 | 1074.15 | 23 |
| 1986 | 821.08 | 24 |