| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2015 | 1140.41 | 58 |
| 2014 | 1626.32 | 57 |
| 2013 | 1741.61 | 57 |
| 2012 | 1740.7 | 56 |
| 2011 | 1540.28 | 57 |
| 2010 | 1154.19 | 59 |
| 2009 | 1059 | 58 |
| 2008 | 1473.96 | 53 |
| 2007 | 1146.41 | 54 |
| 2006 | 1015.51 | 54 |
| 2005 | 807.98 | 55 |
| 2004 | 594.4 | 58 |
| 2003 | 478.76 | 58 |
| 2002 | 381.38 | 58 |
| 2001 | 348.91 | 59 |
| 2000 | 377.12 | 57 |
| 1999 | 301.22 | 60 |
| 1998 | 259.42 | 62 |
| 1997 | 303.54 | 59 |
| 1996 | 314.94 | 58 |
| 1995 | 271.92 | 59 |
| 1994 | 248.48 | 59 |
| 1993 | 239.41 | 58 |
| 1992 | 198.59 | 60 |
| 1991 | 110.09 | 73 |
| 1990 | 184.28 | 63 |
| 1989 | 243.12 | 55 |
| 1988 | 206.92 | 57 |
| 1987 | 223.66 | 54 |
| 1986 | 179.04 | 55 |