| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1850.17 | 51 |
| 2015 | 1755.64 | 54 |
| 2014 | 2006.96 | 53 |
| 2013 | 1905.21 | 55 |
| 2012 | 1761.93 | 54 |
| 2011 | 1684.62 | 54 |
| 2010 | 1465.81 | 53 |
| 2009 | 1213.37 | 52 |
| 2008 | 1332.8 | 55 |
| 2007 | 1373.15 | 51 |
| 2006 | 1116.07 | 51 |
| 2005 | 1147.19 | 45 |
| 2004 | 1039.06 | 44 |
| 2003 | 882.51 | 43 |
| 2002 | 666.28 | 50 |
| 2001 | 538.72 | 51 |
| 2000 | 526.23 | 51 |
| 1999 | 587.62 | 48 |
| 1998 | 562.27 | 48 |
| 1997 | 660.75 | 46 |
| 1996 | 701.41 | 44 |
| 1995 | 639.19 | 45 |
| 1994 | 553.15 | 45 |
| 1993 | 467.75 | 48 |
| 1992 | 416.49 | 48 |
| 1991 | 427.45 | 45 |
| 1990 | 454.96 | 43 |
| 1989 | 439.2 | 39 |
| 1988 | 451.76 | 38 |
| 1987 | 403.78 | 39 |
| 1986 | 306.05 | 41 |