| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 124.9 | 109 |
| 2015 | 116.8 | 128 |
| 2014 | 133.2 | 130 |
| 2013 | 127.7 | 133 |
| 2012 | 118.4 | 133 |
| 2011 | 124.8 | 129 |
| 2010 | 111.3 | 126 |
| 2009 | 114.3 | 118 |
| 2008 | 124 | 118 |
| 2007 | 98.3 | 118 |
| 2006 | 80.3 | 120 |
| 2005 | 72.7 | 121 |
| 2004 | 67.9 | 118 |
| 2003 | 57.3 | 118 |
| 2002 | 47.8 | 118 |
| 2001 | 41.9 | 123 |
| 2000 | 43.1 | 119 |
| 1999 | 40.4 | 120 |
| 1998 | 41 | 121 |
| 1997 | 42.4 | 122 |
| 1996 | 48.8 | 110 |
| 1995 | 48.8 | 104 |
| 1994 | 37.3 | 109 |
| 1993 | 27.5 | 118 |
| 1992 | 22.9 | 121 |
| 1991 | 48.3 | 96 |
| 1990 | 49.2 | 95 |