| 年份 |
进口数量 (吨) |
进口金额
(1000美元) |
出口数量 (吨) |
出口金额
(1000美元) |
| 1961 |
0 |
0 |
1,016 |
360 |
| 1962 |
269 |
77 |
1,016 |
325 |
| 1963 |
0 |
0 |
2,540 |
726 |
| 1964 |
0 |
0 |
2,500 |
710 |
| 1965 |
0 |
0 |
3,000 |
920 |
| 1966 |
0 |
0 |
4,000 |
1,220 |
| 1967 |
0 |
0 |
3,000 |
930 |
| 1968 |
0 |
0 |
4,000 |
1,100 |
| 1969 |
0 |
0 |
3,000 |
900 |
| 1970 |
0 |
0 |
3,000 |
960 |
| 1971 |
0 |
0 |
1,500 |
500 |
| 1972 |
9,000 |
3,000 |
0 |
0 |
| 1973 |
81,000 |
28,000 |
0 |
0 |
| 1975 |
11,000 |
7,500 |
60 |
77 |
| 1976 |
15,000 |
13,500 |
1,200 |
950 |
| 1977 |
148,400 |
113,000 |
1,700 |
1,000 |
| 1978 |
133,500 |
108,000 |
5,800 |
3,900 |
| 1979 |
115,900 |
101,000 |
4,300 |
3,000 |
| 1980 |
120,300 |
105,000 |
0 |
0 |
| 1981 |
54,300 |
45,000 |
0 |
0 |
| 1982 |
42,500 |
33,000 |
800 |
480 |
| 1983 |
12,200 |
9,800 |
1,600 |
1,000 |
| 1984 |
10,267 |
4,067 |
1,500 |
1,150 |
| 1985 |
32,054 |
19,173 |
1,300 |
910 |
| 1986 |
171,232 |
71,310 |
1,061 |
681 |
| 1987 |
406,732 |
141,413 |
399 |
197 |
| 1988 |
137,952 |
60,436 |
278 |
354 |
| 1989 |
421,434 |
193,806 |
135 |
157 |
| 1990 |
524,935 |
246,735 |
7,261 |
3,807 |
| 1991 |
322,859 |
155,056 |
1,439 |
1,140 |
| 1992 |
223,130 |
99,721 |
3,563 |
3,625 |
| 1993 |
75,708 |
37,570 |
14,862 |
11,919 |
| 1994 |
1,063,518 |
651,242 |
72,718 |
49,014 |
| 1995 |
1,481,815 |
1,023,915 |
65,848 |
47,557 |
| 1996 |
1,295,396 |
764,488 |
127,093 |
86,075 |
| 1997 |
1,225,160 |
684,641 |
555,770 |
368,613 |
| 1998 |
831,688 |
522,856 |
185,891 |
134,749 |
| 1999 |
803,691 |
421,036 |
53,394 |
34,327 |
| 2000 |
308,338 |
|
|
|
| 2001 |
|
|
|
|
|
|
