| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2668 | 21 |
| 2015 | 2685 | 25 |
| 2014 | 3087 | 21 |
| 2013 | 3003 | 22 |
| 2012 | 2811 | 24 |
| 2011 | 2920 | 22 |
| 2010 | 2695 | 22 |
| 2009 | 2490 | 21 |
| 2008 | 2975 | 21 |
| 2007 | 2374 | 21 |
| 2006 | 1929 | 21 |
| 2005 | 1719 | 21 |
| 2004 | 1434 | 24 |
| 2003 | 1261 | 24 |
| 2002 | 1168 | 22 |
| 2001 | 1109 | 22 |
| 2000 | 976 | 24 |
| 1999 | 932 | 23 |
| 1998 | 941 | 24 |
| 1997 | 845 | 27 |
| 1996 | 841 | 27 |
| 1995 | 729 | 28 |