| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 386.55 | 85 |
| 2015 | 375.17 | 90 |
| 2014 | 358.27 | 92 |
| 2013 | 335.94 | 94 |
| 2012 | 309.37 | 94 |
| 2011 | 288.4 | 96 |
| 2010 | 264.25 | 94 |
| 2009 | 238.2 | 96 |
| 2008 | 219.72 | 100 |
| 2007 | 171.11 | 104 |
| 2006 | 150.57 | 102 |
| 2005 | 125.89 | 100 |
| 2004 | 114.11 | 99 |
| 2003 | 101.96 | 97 |
| 2002 | 95.82 | 95 |
| 2001 | 89.76 | 94 |
| 2000 | 84.6 | 97 |
| 1999 | 81.49 | 95 |
| 1998 | 79.12 | 95 |
| 1997 | 72.46 | 98 |
| 1996 | 69.28 | 98 |
| 1995 | 67.27 | 95 |
| 1994 | 62.38 | 91 |
| 1993 | 56.06 | 95 |
| 1992 | 53.11 | 97 |
| 1991 | 43.44 | 102 |
| 1990 | 41.6 | 104 |
| 1989 | 42.21 | 91 |
| 1988 | 62.77 | 76 |
| 1987 | 67.56 | 73 |
| 1986 | 64.01 | 72 |