| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 96.4 | 118 |
| 2015 | 94.8 | 138 |
| 2014 | 97.8 | 140 |
| 2013 | 94.5 | 142 |
| 2012 | 87.5 | 143 |
| 2011 | 92.6 | 140 |
| 2010 | 88.2 | 134 |
| 2009 | 86.6 | 133 |
| 2008 | 90 | 133 |
| 2007 | 78.4 | 131 |
| 2006 | 69.9 | 128 |
| 2005 | 65.5 | 127 |
| 2004 | 61.4 | 125 |
| 2003 | 54.1 | 123 |
| 2002 | 44.8 | 124 |
| 2001 | 44 | 120 |
| 2000 | 46.2 | 116 |
| 1999 | 42.2 | 118 |
| 1998 | 40.3 | 123 |
| 1997 | 38.9 | 125 |
| 1996 | 39 | 127 |
| 1995 | 37.6 | 121 |
| 1994 | 32.9 | 118 |
| 1993 | 29.6 | 116 |
| 1992 | 32.3 | 114 |
| 1991 | 30.4 | 114 |
| 1990 | 28.7 | 113 |
| 1989 | 23.4 | 102 |
| 1988 | 22.1 | 99 |
| 1987 | 19.1 | 101 |
| 1986 | 15.7 | 102 |