| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 322.5 | 37 |
| 2015 | 310.3 | 42 |
| 2014 | 289.9 | 44 |
| 2013 | 267.4 | 47 |
| 2012 | 261.7 | 48 |
| 2011 | 253.7 | 48 |
| 2010 | 244.4 | 49 |
| 2009 | 233.7 | 48 |
| 2008 | 221 | 47 |
| 2007 | 216.3 | 46 |
| 2006 | 215.8 | 45 |
| 2005 | 209.5 | 44 |
| 2004 | 203.9 | 45 |
| 2003 | 199.8 | 46 |
| 2002 | 194.6 | 46 |
| 2001 | 189.6 | 44 |
| 2000 | 180.8 | 43 |
| 1999 | 175.8 | 42 |
| 1998 | 171.4 | 42 |
| 1997 | 166.4 | 42 |
| 1996 | 158.3 | 42 |
| 1995 | 150.2 | 43 |
| 1994 | 143 | 43 |
| 1993 | 136.7 | 43 |
| 1992 | 130.4 | 43 |
| 1991 | 123.1 | 44 |
| 1990 | 120.3 | 43 |
| 1989 | 129.5 | 35 |
| 1988 | 136.5 | 32 |
| 1987 | 135 | 32 |
| 1986 | 131 | 32 |