| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 114 | 122 |
| 2015 | 129.3 | 121 |
| 2014 | 171.23 | 114 |
| 2013 | 180.94 | 113 |
| 2012 | 190.48 | 110 |
| 2011 | 185.25 | 112 |
| 2010 | 137.07 | 117 |
| 2009 | 107.32 | 123 |
| 2008 | 143.93 | 113 |
| 2007 | 122.48 | 117 |
| 2006 | 114.71 | 110 |
| 2005 | 95.31 | 111 |
| 2004 | 78.72 | 115 |
| 2003 | 65.57 | 114 |
| 2002 | 58.43 | 115 |
| 2001 | 56.01 | 114 |
| 2000 | 60.01 | 110 |
| 1999 | 46 | 118 |
| 1998 | 40.51 | 121 |
| 1997 | 51.97 | 108 |
| 1996 | 51.16 | 109 |
| 1995 | 47.34 | 108 |
| 1994 | 40.87 | 103 |
| 1993 | 41.06 | 105 |
| 1992 | 41.84 | 103 |
| 1991 | 37.02 | 108 |
| 1990 | 35.21 | 107 |
| 1989 | 29.85 | 102 |
| 1988 | 26.91 | 101 |
| 1987 | 27.54 | 97 |
| 1986 | 23.59 | 98 |