| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 156.1 | 105 |
| 2015 | 150.7 | 117 |
| 2014 | 138.6 | 127 |
| 2013 | 132.4 | 132 |
| 2012 | 126.6 | 129 |
| 2011 | 119 | 131 |
| 2010 | 104.6 | 130 |
| 2009 | 98.8 | 129 |
| 2008 | 108.6 | 123 |
| 2007 | 94.2 | 119 |
| 2006 | 84.4 | 118 |
| 2005 | 77.7 | 117 |
| 2004 | 70.2 | 114 |
| 2003 | 64.3 | 114 |
| 2002 | 62.9 | 111 |
| 2001 | 63.8 | 108 |
| 2000 | 61.8 | 107 |
| 1999 | 60.9 | 105 |
| 1998 | 54.9 | 109 |
| 1997 | 52.3 | 109 |
| 1996 | 49.5 | 109 |
| 1995 | 46.3 | 109 |
| 1994 | 43.6 | 100 |
| 1993 | 22.4 | 125 |
| 1992 | 24.4 | 119 |
| 1991 | 19.5 | 130 |
| 1990 | 12.3 | 132 |
| 1989 | 13.4 | 112 |
| 1988 | 36.9 | 88 |
| 1987 | 39.3 | 83 |
| 1986 | 31.2 | 87 |