| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 192 | 68 |
| 2015 | 207 | 69 |
| 2014 | 286 | 67 |
| 2013 | 263 | 70 |
| 2012 | 237 | 70 |
| 2011 | 202 | 74 |
| 2010 | 167 | 76 |
| 2009 | 227 | 63 |
| 2008 | 210 | 71 |
| 2007 | 137 | 76 |
| 2006 | 88 | 84 |
| 2005 | 84 | 82 |
| 2004 | 58 | 85 |
| 2003 | 55 | 79 |
| 2002 | 38 | 87 |
| 2001 | 32 | 90 |
| 2000 | 30 | 93 |
| 1999 | 31 | 88 |
| 1998 | 21 | 101 |
| 1997 | 26 | 94 |
| 1996 | 20 | 98 |
| 1995 | 15 | 105 |
| 1994 | 15 | 103 |
| 1993 | 15 | 93 |
| 1992 | 20 | 81 |
| 1991 | 13 | 91 |
| 1990 | 16 | 83 |
| 1989 | 13 | 84 |
| 1988 | 14 | 79 |
| 1987 | 13 | 79 |
| 1986 | 11 | 85 |