| 序号 | 时间 (年) |
数据 (万美元) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2019 | |
| 3 | 2017 | |
| 4 | 2015 | |
| 5 | 2014 | |
| 6 | 2013 | |
| 7 | 2012 | 318.00 |
| 8 | 2011 | 559.00 |
| 9 | 2010 | 62.00 |
| 10 | 2009 | 35.00 |
| 11 | 2008 | 86.00 |
| 12 | 2007 | 21.00 |
| 13 | 2006 | 523.00 |
| 14 | 2005 | 314.00 |
| 15 | 2004 | 731.00 |
| 16 | 2003 | 996.00 |
| 17 | 2002 | 30.00 |
| 18 | 1999 | 19.00 |
| 19 | 1998 | 1.00 |
| 20 | 1997 | 270.00 |
| 21 | 1996 | 339.00 |
| 22 | 1995 | 544.00 |
| 23 | 1990 | 260.00 |
