| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 482.1 | 70 |
| 2015 | 477.8 | 81 |
| 2014 | 532 | 78 |
| 2013 | 502.8 | 85 |
| 2012 | 437.1 | 86 |
| 2011 | 390.6 | 87 |
| 2010 | 346.7 | 88 |
| 2009 | 311.2 | 86 |
| 2008 | 306.9 | 88 |
| 2007 | 242.5 | 88 |
| 2006 | 200.8 | 89 |
| 2005 | 178.2 | 88 |
| 2004 | 136.5 | 94 |
| 2003 | 121.5 | 91 |
| 2002 | 110.5 | 88 |
| 2001 | 108.3 | 87 |
| 2000 | 108.7 | 84 |
| 1999 | 107 | 85 |
| 1998 | 105.2 | 85 |
| 1997 | 84.1 | 92 |
| 1996 | 72.8 | 94 |
| 1995 | 61.7 | 96 |
| 1994 | 55.5 | 91 |
| 1993 | 55.2 | 91 |
| 1992 | 58.4 | 92 |
| 1991 | 61.2 | 88 |
| 1990 | 53.2 | 91 |