| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 308.7 | 38 |
| 2015 | 315.7 | 39 |
| 2014 | 319.3 | 40 |
| 2013 | 315.7 | 41 |
| 2012 | 313.3 | 42 |
| 2011 | 304.8 | 42 |
| 2010 | 277.7 | 44 |
| 2009 | 262.5 | 46 |
| 2008 | 242 | 45 |
| 2007 | 215.9 | 47 |
| 2006 | 212.3 | 46 |
| 2005 | 199.8 | 47 |
| 2004 | 203.7 | 46 |
| 2003 | 202.2 | 45 |
| 2002 | 195.7 | 45 |
| 2001 | 178.3 | 45 |
| 2000 | 173.2 | 45 |
| 1999 | 173 | 43 |
| 1998 | 168.8 | 43 |
| 1997 | 163.9 | 43 |
| 1996 | 160.7 | 41 |
| 1995 | 154.5 | 42 |
| 1994 | 148.4 | 41 |
| 1993 | 142.7 | 40 |
| 1992 | 143.3 | 40 |
| 1991 | 131.1 | 41 |
| 1990 | 119.7 | 44 |
| 1989 | 117.9 | 38 |
| 1988 | 128.6 | 36 |
| 1987 | 120.5 | 36 |
| 1986 | 127.3 | 33 |