| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 435.9 | 34 |
| 2015 | 415.2 | 38 |
| 2014 | 414.1 | 39 |
| 2013 | 396.1 | 40 |
| 2012 | 401.6 | 38 |
| 2011 | 413 | 38 |
| 2010 | 418.3 | 38 |
| 2009 | 435.9 | 36 |
| 2008 | 447.1 | 35 |
| 2007 | 441.3 | 34 |
| 2006 | 413 | 34 |
| 2005 | 392.9 | 35 |
| 2004 | 375.7 | 35 |
| 2003 | 369.4 | 35 |
| 2002 | 358.8 | 35 |
| 2001 | 335.8 | 35 |
| 2000 | 304.8 | 37 |
| 1999 | 281.2 | 36 |
| 1998 | 266.2 | 36 |
| 1997 | 247.8 | 38 |
| 1996 | 232.2 | 38 |
| 1995 | 224.3 | 38 |
| 1994 | 216 | 37 |
| 1993 | 207.4 | 37 |
| 1992 | 207.3 | 35 |
| 1991 | 201.3 | 35 |
| 1990 | 196 | 34 |
| 1989 | 185.9 | 28 |
| 1988 | 188.3 | 28 |
| 1987 | 198.2 | 28 |
| 1986 | 208.3 | 27 |