| 序号 | 时间 (年) |
数据 (百万美元) |
|---|---|---|
| 1 | 2015 | |
| 2 | 2014 | |
| 3 | 2013 | |
| 4 | 2012 | |
| 5 | 2011 | |
| 6 | 2010 | |
| 7 | 2009 | 108.21 |
| 8 | 2008 | 226.54 |
| 9 | 2007 | 325.21 |
| 10 | 2006 | 650.06 |
| 11 | 2005 | 657.99 |
| 12 | 2004 | 996.76 |
| 13 | 2003 | 1087.27 |
| 14 | 2002 | 771.66 |
| 15 | 2001 | 576.20 |
| 16 | 2000 | 847.12 |
| 17 | 1999 | 891.83 |
| 18 | 1998 | 465.01 |
| 19 | 1997 | 373.35 |
| 20 | 1996 | 474.18 |
