| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 3061.43 | 34 |
| 2015 | 3013.08 | 35 |
| 2014 | 3522.97 | 33 |
| 2013 | 3435.84 | 35 |
| 2012 | 3271.49 | 35 |
| 2011 | 3440.03 | 33 |
| 2010 | 3219.95 | 33 |
| 2009 | 3212.41 | 31 |
| 2008 | 3533.61 | 30 |
| 2007 | 3194.23 | 28 |
| 2006 | 2828.85 | 27 |
| 2005 | 2644.67 | 27 |
| 2004 | 2513.73 | 27 |
| 2003 | 2180.96 | 25 |
| 2002 | 1786.35 | 27 |
| 2001 | 1647.91 | 28 |
| 2000 | 1641.59 | 29 |
| 1999 | 1779.65 | 24 |
| 1998 | 1769.92 | 24 |
| 1997 | 1735.38 | 26 |
| 1996 | 1876.32 | 24 |
| 1995 | 1850.07 | 24 |
| 1994 | 1561.62 | 24 |
| 1993 | 1431.96 | 25 |
| 1992 | 1529.16 | 24 |
| 1991 | 1392.25 | 24 |
| 1990 | 1382.47 | 26 |
| 1989 | 1124.09 | 25 |
| 1988 | 1155.53 | 24 |
| 1987 | 1094.14 | 22 |
| 1986 | 880.79 | 22 |