| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 338.06 | 91 |
| 2015 | 330 | 94 |
| 2014 | 329.96 | 96 |
| 2013 | 306.59 | 97 |
| 2012 | 270.84 | 98 |
| 2011 | 239.63 | 103 |
| 2010 | 196.5 | 107 |
| 2009 | 173.4 | 107 |
| 2008 | 166.74 | 110 |
| 2007 | 131.2 | 110 |
| 2006 | 114.52 | 111 |
| 2005 | 95.49 | 110 |
| 2004 | 87.73 | 108 |
| 2003 | 80.82 | 106 |
| 2002 | 79.05 | 100 |
| 2001 | 81.42 | 100 |
| 2000 | 83.98 | 98 |
| 1999 | 82.85 | 94 |
| 1998 | 84.98 | 93 |
| 1997 | 79.26 | 93 |
| 1996 | 73.97 | 95 |
| 1995 | 67.15 | 96 |
| 1994 | 59.81 | 92 |
| 1993 | 57.35 | 92 |
| 1992 | 56.44 | 93 |
| 1991 | 53.43 | 95 |
| 1990 | 48.68 | 97 |
| 1989 | 47.16 | 84 |
| 1988 | 45.98 | 85 |
| 1987 | 43.48 | 85 |
| 1986 | 39.59 | 83 |