| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 122.3 | 110 |
| 2015 | 117.1 | 126 |
| 2014 | 153.6 | 119 |
| 2013 | 133.5 | 130 |
| 2012 | 121 | 132 |
| 2011 | 121.9 | 130 |
| 2010 | 106 | 129 |
| 2009 | 95.5 | 131 |
| 2008 | 100.2 | 127 |
| 2007 | 84.7 | 128 |
| 2006 | 67.6 | 129 |
| 2005 | 59.9 | 130 |
| 2004 | 55.6 | 129 |
| 2003 | 49.7 | 128 |
| 2002 | 42.2 | 128 |
| 2001 | 37.7 | 126 |
| 2000 | 32.3 | 129 |
| 1999 | 36.6 | 127 |
| 1998 | 45.4 | 115 |
| 1997 | 40.4 | 123 |
| 1996 | 40.1 | 123 |
| 1995 | 37.9 | 120 |
| 1994 | 32.1 | 119 |
| 1993 | 37.5 | 105 |
| 1992 | 49.1 | 94 |
| 1991 | 46.5 | 97 |
| 1990 | 50.5 | 93 |
| 1989 | 39.9 | 85 |
| 1988 | 40.3 | 84 |
| 1987 | 33.6 | 85 |
| 1986 | 40.7 | 80 |