| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 331.8 | 36 |
| 2015 | 315.6 | 40 |
| 2014 | 301.9 | 43 |
| 2013 | 289.2 | 45 |
| 2012 | 281.2 | 44 |
| 2011 | 271.1 | 45 |
| 2010 | 264.6 | 47 |
| 2009 | 255.1 | 47 |
| 2008 | 235.3 | 46 |
| 2007 | 234.5 | 44 |
| 2006 | 219 | 44 |
| 2005 | 205.8 | 45 |
| 2004 | 194.4 | 47 |
| 2003 | 183.4 | 47 |
| 2002 | 181.9 | 47 |
| 2001 | 177.9 | 46 |
| 2000 | 173.7 | 44 |
| 1999 | 169.7 | 44 |
| 1998 | 166.2 | 44 |
| 1997 | 163.3 | 44 |
| 1996 | 155.2 | 44 |
| 1995 | 149.3 | 44 |
| 1994 | 143.3 | 42 |
| 1993 | 140.6 | 41 |
| 1992 | 134.8 | 42 |
| 1991 | 127.6 | 42 |
| 1990 | 123.2 | 42 |
| 1989 | 122.2 | 37 |
| 1988 | 117.8 | 38 |
| 1987 | 113.7 | 37 |
| 1986 | 116.7 | 36 |