| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 576.1 | 65 |
| 2015 | 558.5 | 74 |
| 2014 | 519 | 81 |
| 2013 | 512.1 | 81 |
| 2012 | 482.4 | 82 |
| 2011 | 438.4 | 85 |
| 2010 | 379.7 | 83 |
| 2009 | 307.1 | 87 |
| 2008 | 333.2 | 84 |
| 2007 | 281.7 | 85 |
| 2006 | 233.2 | 85 |
| 2005 | 204.1 | 81 |
| 2004 | 186.9 | 81 |
| 2003 | 175.4 | 79 |
| 2002 | 168.3 | 75 |
| 2001 | 158.9 | 75 |
| 2000 | 150.5 | 75 |
| 1999 | 145.4 | 75 |
| 1998 | 141.8 | 78 |
| 1997 | 131.1 | 78 |
| 1996 | 120.9 | 78 |
| 1995 | 119.2 | 79 |
| 1994 | 110.9 | 75 |
| 1993 | 102.3 | 78 |
| 1992 | 90 | 77 |
| 1991 | 75 | 82 |
| 1990 | 78.5 | 80 |
| 1989 | 71.3 | 71 |
| 1988 | 62 | 73 |
| 1987 | 60.8 | 74 |
| 1986 | 54.7 | 75 |