| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 311 | 17 |
| 2015 | 288 | 22 |
| 2014 | 265 | 25 |
| 2013 | 232 | 27 |
| 2012 | 216 | 27 |
| 2011 | 216 | 26 |
| 2010 | 196 | 27 |
| 2009 | 175 | 27 |
| 2008 | 161 | 28 |
| 2007 | 142 | 29 |
| 2006 | 130 | 26 |
| 2005 | 129 | 23 |
| 2004 | 125 | 22 |
| 2003 | 119 | 22 |
| 2002 | 113 | 21 |
| 2001 | 118 | 21 |
| 2000 | 121 | 20 |
| 1999 | 116 | 22 |
| 1998 | 113 | 24 |
| 1997 | 112 | 25 |
| 1996 | 108 | 25 |
| 1995 | 96 | 25 |
| 1994 | 83 | 22 |
| 1993 | 84 | 22 |
| 1992 | 90 | 21 |
| 1991 | 91 | 21 |
| 1990 | 101 | 20 |
| 1989 | 92 | 18 |
| 1988 | 87 | 19 |
| 1987 | 83 | 16 |
| 1986 | 73 | 15 |