| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 507.9 | 68 |
| 2015 | 501.2 | 79 |
| 2014 | 572.7 | 76 |
| 2013 | 559.9 | 78 |
| 2012 | 556.1 | 75 |
| 2011 | 572 | 72 |
| 2010 | 520.5 | 72 |
| 2009 | 560.8 | 67 |
| 2008 | 654.2 | 65 |
| 2007 | 531.3 | 65 |
| 2006 | 401.8 | 66 |
| 2005 | 342 | 67 |
| 2004 | 290.1 | 68 |
| 2003 | 232.3 | 69 |
| 2002 | 176.7 | 73 |
| 2001 | 154.6 | 76 |
| 2000 | 138.5 | 78 |
| 1999 | 141.2 | 76 |
| 1998 | 136 | 79 |
| 1997 | 97.6 | 86 |
| 1996 | 87.4 | 87 |
| 1995 | 128 | 76 |
| 1994 | 97.6 | 77 |
| 1993 | 116.6 | 74 |
| 1992 | 109.5 | 71 |
| 1991 | 104.8 | 69 |
| 1990 | 213.8 | 58 |
| 1989 | 223.7 | 53 |
| 1988 | 226.3 | 51 |
| 1987 | 286.2 | 44 |
| 1986 | 209.5 | 48 |