| 序号 | 时间 (年) |
数据 (万美元) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2016 | |
| 6 | 2015 | |
| 7 | 2014 | |
| 8 | 2013 | |
| 9 | 2012 | |
| 10 | 2011 | |
| 11 | 2010 | -12258.67 |
| 12 | 2009 | -10500.00 |
| 13 | 1994 | -2992.24 |
| 14 | 1993 | -2795.51 |
| 15 | 1992 | -1494.99 |
| 16 | 1991 | -279.05 |
| 17 | 1990 | 1220.58 |
| 18 | 1989 | 1018.08 |
| 19 | 1988 | -409.35 |
| 20 | 1987 | 3050.67 |
| 21 | 1986 | -744.51 |
| 22 | 1985 | -284.86 |
| 23 | 1984 | 248.82 |
| 24 | 1983 | 207.43 |
| 25 | 1982 | 84.13 |
| 26 | 1981 | -354.61 |
| 27 | 1980 | -154.97 |
| 28 | 1979 | -14.70 |
| 29 | 1978 | -251.92 |
| 30 | 1977 | 381.52 |
