| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 410.8 | 9 |
| 2015 | 398.1 | 9 |
| 2014 | 461 | 9 |
| 2013 | 459.3 | 8 |
| 2012 | 464.7 | 8 |
| 2011 | 481.4 | 9 |
| 2010 | 462.6 | 8 |
| 2009 | 474.7 | 7 |
| 2008 | 480.8 | 6 |
| 2007 | 425.5 | 6 |
| 2006 | 380.9 | 6 |
| 2005 | 380.5 | 6 |
| 2004 | 380.1 | 6 |
| 2003 | 350.6 | 6 |
| 2002 | 293.3 | 6 |
| 2001 | 274.3 | 6 |
| 2000 | 281.5 | 5 |
| 1999 | 326 | 5 |
| 1998 | 331.5 | 5 |
| 1997 | 332.2 | 5 |
| 1996 | 389.9 | 4 |
| 1995 | 411.6 | 4 |
| 1994 | 363.3 | 4 |
| 1993 | 372.2 | 4 |
| 1992 | 419.6 | 3 |
| 1991 | 395.2 | 4 |
| 1990 | 423.2 | 3 |
| 1989 | 336 | 3 |
| 1988 | 351 | 3 |
| 1987 | 341.3 | 3 |
| 1986 | 276.9 | 3 |