| 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 | -183574.61 |
| 12 | 2009 | -110091.28 |
| 13 | 1994 | 16356.24 |
| 14 | 1993 | 12195.63 |
| 15 | 1992 | -25421.14 |
| 16 | 1991 | 4800.14 |
| 17 | 1990 | 24241.69 |
| 18 | 1989 | 37480.18 |
| 19 | 1988 | 50068.19 |
| 20 | 1987 | 38052.72 |
| 21 | 1986 | 31081.70 |
| 22 | 1985 | 20040.89 |
| 23 | 1984 | 18406.98 |
| 24 | 1983 | 8403.94 |
| 25 | 1982 | -15974.15 |
| 26 | 1981 | -8246.38 |
| 27 | 1980 | 10599.88 |
| 28 | 1979 | 20440.94 |
| 29 | 1978 | 26999.63 |
| 30 | 1977 | 22938.85 |
