| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2317.2 | 37 |
| 2015 | 2095.4 | 43 |
| 2014 | 1841.8 | 53 |
| 2013 | 1608.2 | 56 |
| 2012 | 1437.4 | 56 |
| 2011 | 1383.8 | 56 |
| 2010 | 1219.1 | 57 |
| 2009 | 1088.4 | 56 |
| 2008 | 983.2 | 59 |
| 2007 | 843.5 | 58 |
| 2006 | 757 | 54 |
| 2005 | 733.4 | 53 |
| 2004 | 680.8 | 52 |
| 2003 | 630.4 | 51 |
| 2002 | 569.9 | 50 |
| 2001 | 568.7 | 48 |
| 2000 | 558.4 | 46 |
| 1999 | 537.7 | 47 |
| 1998 | 521.7 | 48 |
| 1997 | 507.9 | 49 |
| 1996 | 495.3 | 48 |
| 1995 | 404 | 52 |
| 1994 | 354.1 | 53 |
| 1993 | 348.5 | 51 |
| 1992 | 332.2 | 51 |
| 1991 | 326.8 | 50 |
| 1990 | 338.6 | 49 |
| 1989 | 308.7 | 46 |
| 1988 | 283.9 | 45 |
| 1987 | 259.3 | 47 |
| 1986 | 232.2 | 46 |