| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 723.74 | 64 |
| 2015 | 644.64 | 70 |
| 2014 | 556.12 | 79 |
| 2013 | 476.48 | 85 |
| 2012 | 433.11 | 84 |
| 2011 | 319.53 | 93 |
| 2010 | 299.34 | 91 |
| 2009 | 324.37 | 86 |
| 2008 | 270.67 | 93 |
| 2007 | 197.08 | 102 |
| 2006 | 152.81 | 101 |
| 2005 | 124.01 | 101 |
| 2004 | 101.31 | 104 |
| 2003 | 86.24 | 102 |
| 2002 | 78.51 | 101 |
| 2001 | 82.31 | 98 |
| 2000 | 82.42 | 99 |
| 1999 | 77.01 | 97 |
| 1998 | 78.18 | 96 |
| 1997 | 85.89 | 91 |
| 1996 | 85.48 | 91 |
| 1995 | 76.64 | 91 |
| 1994 | 69.28 | 87 |
| 1993 | 88.31 | 81 |
| 1992 | 104.93 | 73 |
| 1991 | 134.64 | 65 |
| 1990 | 121.75 | 71 |
| 1989 | 114.77 | 61 |
| 1988 | 109.09 | 62 |
| 1987 | 105.27 | 63 |
| 1986 | 98.49 | 61 |