| 序号 | 时间 (年) |
数据 (万美元) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 653.00 |
| 8 | 2014 | 10625.00 |
| 9 | 2013 | 12501.00 |
| 10 | 2012 | 17019.00 |
| 11 | 2011 | 2571.00 |
| 12 | 2010 | 813.00 |
| 13 | 2009 | 1455.00 |
| 14 | 2008 | 3221.00 |
| 15 | 2007 | -197.00 |
| 16 | 2006 | 6121.00 |
| 17 | 2005 | 754.00 |
| 18 | 2004 | 321.00 |
| 19 | 2003 | 7144.00 |
| 20 | 2002 | 6224.00 |
| 21 | 2001 | 1464.00 |
| 22 | 2000 | 1666.00 |
| 23 | 1999 | 4806.00 |
| 24 | 1998 | 21773.00 |
| 25 | 1997 | 21977.00 |
| 26 | 1996 | 15031.00 |
| 27 | 1995 | 3187.00 |
| 28 | 1994 | 4132.00 |
| 29 | 1993 | 6931.00 |
| 30 | 1992 | 1088.00 |
| 31 | 1990 | 91.00 |
| 32 | 1985 | 1254.00 |
| 33 | 1984 | 918.00 |
| 34 | 1981 | 72.00 |
| 35 | 1980 | 5.00 |
