| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1884.4 | 44 |
| 2015 | 1786.1 | 51 |
| 2014 | 2003.7 | 49 |
| 2013 | 1930.3 | 53 |
| 2012 | 1802 | 52 |
| 2011 | 1956.8 | 48 |
| 2010 | 1783.1 | 47 |
| 2009 | 1781.5 | 43 |
| 2008 | 2357.7 | 38 |
| 2007 | 1960.7 | 38 |
| 2006 | 1382.7 | 42 |
| 2005 | 1097.8 | 46 |
| 2004 | 830.3 | 48 |
| 2003 | 643.1 | 50 |
| 2002 | 487.6 | 54 |
| 2001 | 438 | 53 |
| 2000 | 394.2 | 53 |
| 1999 | 378.2 | 53 |
| 1998 | 452.3 | 52 |
| 1997 | 382.6 | 54 |
| 1996 | 400.9 | 54 |
| 1995 | 395.5 | 53 |
| 1994 | 307 | 54 |
| 1993 | 276.7 | 55 |
| 1992 | 272.3 | 54 |
| 1991 | 301.4 | 52 |
| 1990 | 426.8 | 45 |