| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 102.67 | 128 |
| 2015 | 114.92 | 128 |
| 2014 | 128.54 | 129 |
| 2013 | 127.13 | 130 |
| 2012 | 130.16 | 126 |
| 2011 | 124.1 | 129 |
| 2010 | 112.82 | 125 |
| 2009 | 88.76 | 131 |
| 2008 | 84.87 | 135 |
| 2007 | 87.41 | 127 |
| 2006 | 79.79 | 124 |
| 2005 | 72.61 | 124 |
| 2004 | 66.07 | 122 |
| 2003 | 49.31 | 127 |
| 2002 | 33.61 | 137 |
| 2001 | 35.47 | 131 |
| 2000 | 39.09 | 125 |
| 1999 | 38.19 | 124 |
| 1998 | 38.27 | 123 |
| 1997 | 41.03 | 120 |
| 1996 | 39.45 | 120 |
| 1995 | 39.42 | 118 |
| 1994 | 36.37 | 110 |
| 1993 | 32.18 | 115 |
| 1992 | 34.48 | 108 |
| 1991 | 30.13 | 119 |
| 1990 | 28.04 | 118 |
| 1989 | 25.47 | 107 |
| 1988 | 25.07 | 106 |
| 1987 | 23.1 | 104 |
| 1986 | 18.17 | 107 |