| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 272.1 | 88 |
| 2015 | 277 | 97 |
| 2014 | 258.5 | 101 |
| 2013 | 244.3 | 105 |
| 2012 | 232.8 | 106 |
| 2011 | 234.6 | 101 |
| 2010 | 202.9 | 102 |
| 2009 | 157.1 | 106 |
| 2008 | 151.2 | 112 |
| 2007 | 122.7 | 114 |
| 2006 | 106.6 | 109 |
| 2005 | 93.4 | 110 |
| 2004 | 82 | 111 |
| 2003 | 71.4 | 109 |
| 2002 | 67 | 106 |
| 2001 | 66.5 | 103 |
| 2000 | 60 | 108 |
| 1999 | 53.8 | 109 |
| 1998 | 53.9 | 110 |
| 1997 | 54.8 | 105 |
| 1996 | 51 | 108 |
| 1995 | 48.2 | 106 |
| 1994 | 45.7 | 97 |
| 1993 | 40.4 | 101 |
| 1992 | 37.3 | 102 |
| 1991 | 43.8 | 99 |
| 1990 | 40.3 | 99 |
| 1989 | 39.2 | 88 |
| 1988 | 38.7 | 87 |
| 1987 | 32.3 | 88 |
| 1986 | 31 | 88 |