| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1119.7 | 50 |
| 2015 | 1084.3 | 57 |
| 2014 | 1236.3 | 58 |
| 2013 | 1222.8 | 58 |
| 2012 | 1132.7 | 58 |
| 2011 | 1155.9 | 58 |
| 2010 | 1032.7 | 58 |
| 2009 | 1039.6 | 58 |
| 2008 | 1056.3 | 57 |
| 2007 | 864.3 | 57 |
| 2006 | 727.5 | 56 |
| 2005 | 661.3 | 56 |
| 2004 | 628.3 | 55 |
| 2003 | 537.9 | 55 |
| 2002 | 433.8 | 55 |
| 2001 | 406.4 | 54 |
| 2000 | 410.3 | 52 |
| 1999 | 431.6 | 52 |
| 1998 | 434.7 | 53 |
| 1997 | 404.4 | 53 |
| 1996 | 446.4 | 51 |
| 1995 | 415.2 | 51 |
| 1994 | 375.4 | 51 |
| 1993 | 334.1 | 53 |
| 1992 | 357.1 | 49 |
| 1991 | 339.5 | 49 |
| 1990 | 318.4 | 52 |
| 1989 | 276.9 | 50 |
| 1988 | 257.4 | 48 |
| 1987 | 227.9 | 49 |
| 1986 | 207.3 | 49 |