| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 231.37 | 99 |
| 2015 | 224.6 | 103 |
| 2014 | 262.14 | 102 |
| 2013 | 250.81 | 104 |
| 2012 | 230.44 | 107 |
| 2011 | 231.7 | 106 |
| 2010 | 194.91 | 108 |
| 2009 | 196.52 | 103 |
| 2008 | 241.94 | 98 |
| 2007 | 222.37 | 91 |
| 2006 | 169.64 | 100 |
| 2005 | 140.06 | 98 |
| 2004 | 120.59 | 97 |
| 2003 | 98.34 | 99 |
| 2002 | 73.22 | 104 |
| 2001 | 62.45 | 108 |
| 2000 | 56.86 | 112 |
| 1999 | 57.27 | 108 |
| 1998 | 56.17 | 108 |
| 1997 | 50.66 | 109 |
| 1996 | 47.46 | 112 |
| 1995 | 43.74 | 113 |