| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 105.47 | 127 |
| 2015 | 105.29 | 132 |
| 2014 | 116.1 | 135 |
| 2013 | 111.21 | 136 |
| 2012 | 106.19 | 134 |
| 2011 | 101.42 | 137 |
| 2010 | 92.6 | 134 |
| 2009 | 86.48 | 132 |
| 2008 | 116.62 | 123 |
| 2007 | 92.06 | 126 |
| 2006 | 63.84 | 136 |
| 2005 | 49 | 138 |
| 2004 | 35.77 | 146 |
| 2003 | 28.07 | 147 |
| 2002 | 23.76 | 147 |
| 2001 | 21.18 | 144 |
| 2000 | 19.12 | 145 |
| 1999 | 18.45 | 146 |
| 1998 | 18.94 | 146 |
| 1997 | 16.39 | 151 |
| 1996 | 15.97 | 151 |
| 1995 | 14.68 | 149 |
| 1994 | 13.15 | 144 |
| 1993 | 12.01 | 148 |
| 1992 | 12.73 | 145 |
| 1991 | 20.69 | 132 |
| 1990 | 22.57 | 132 |