| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 318.59 | 92 |
| 2015 | 311.26 | 96 |
| 2014 | 333.88 | 95 |
| 2013 | 328.99 | 95 |
| 2012 | 307.49 | 95 |
| 2011 | 291.57 | 95 |
| 2010 | 257.13 | 95 |
| 2009 | 229.38 | 98 |
| 2008 | 257.11 | 95 |
| 2007 | 217.3 | 92 |
| 2006 | 185.05 | 93 |
| 2005 | 159.69 | 96 |
| 2004 | 131.5 | 95 |
| 2003 | 110.75 | 95 |
| 2002 | 96.32 | 94 |
| 2001 | 89.76 | 93 |
| 2000 | 90.63 | 93 |
| 1999 | 66.21 | 102 |
| 1998 | 61.84 | 105 |
| 1997 | 63.49 | 103 |
| 1996 | 61.02 | 101 |
| 1995 | 58.49 | 98 |
| 1994 | 55.68 | 94 |
| 1993 | 52 | 98 |
| 1992 | 47.51 | 100 |
| 1991 | 46.16 | 100 |
| 1990 | 42.3 | 103 |
| 1989 | 38.64 | 94 |
| 1988 | 37.02 | 94 |
| 1987 | 33.92 | 91 |
| 1986 | 30.52 | 91 |