| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 149 | 16 |
| 2015 | 149.4 | 17 |
| 2014 | 171.8 | 18 |
| 2013 | 172.4 | 17 |
| 2012 | 188.6 | 16 |
| 2011 | 197 | 15 |
| 2010 | 197.1 | 14 |
| 2009 | 201.8 | 13 |
| 2008 | 222.3 | 13 |
| 2007 | 200.7 | 13 |
| 2006 | 172.5 | 12 |
| 2005 | 160 | 12 |
| 2004 | 152.6 | 12 |
| 2003 | 128.8 | 12 |
| 2002 | 102.7 | 12 |
| 2001 | 102.2 | 13 |
| 2000 | 102.7 | 12 |
| 1999 | 111.1 | 11 |
| 1998 | 103.3 | 12 |
| 1997 | 98.7 | 13 |
| 1996 | 112.9 | 12 |
| 1995 | 114.4 | 12 |
| 1994 | 100.9 | 11 |
| 1993 | 100.4 | 11 |
| 1992 | 122.5 | 9 |
| 1991 | 116.8 | 10 |
| 1990 | 117 | 8 |
| 1989 | 93 | 12 |
| 1988 | 89 | 10 |
| 1987 | 79.2 | 10 |
| 1986 | 62.7 | 10 |