| 序号 | 时间 (年) |
数据 (万美元) |
|---|---|---|
| 1 | 2018 | |
| 2 | 2017 | |
| 3 | 2016 | |
| 4 | 2015 | |
| 5 | 2014 | |
| 6 | 2013 | |
| 7 | 2012 | -60.49 |
| 8 | 2011 | -335.50 |
| 9 | 2010 | -78.06 |
| 10 | 2009 | -34.84 |
| 11 | 2008 | -325.17 |
| 12 | 2007 | -46.52 |
| 13 | 2006 | -3.16 |
| 14 | 2005 | -58.47 |
| 15 | 2004 | -4.47 |
| 16 | 2003 | -0.46 |
| 17 | 2001 | 0.23 |
| 18 | 2000 | -1168.32 |
| 19 | 1999 | 23.65 |
| 20 | 1995 | -138.13 |
| 21 | 1994 | 9.89 |
| 22 | 1993 | -33.78 |
| 23 | 1992 | -60.01 |
| 24 | 1991 | -86.50 |
| 25 | 1990 | -124.96 |
| 26 | 1989 | -51.68 |
| 27 | 1988 | -119.66 |
| 28 | 1987 | -136.77 |
| 29 | 1986 | -152.40 |
| 30 | 1985 | -53.86 |
