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year | production | consumption |
1980 | 2.00 | 2.00 |
1981 | 2.00 | 2.00 |
1982 | 1.00 | 1.00 |
1983 | 1.00 | 1.00 |
1984 | .70 | .80 |
1985 | .70 | .70 |
1986 | .60 | .70 |
1987 | .70 | .70 |
1988 | .50 | .60 |
1989 | .60 | .60 |
1990 | .50 | .60 |
1991 | .50 | .50 |
1992 | .50 | .50 |
1993 | .20 | .40 |
1994 | .50 | .40 |
1995 | .40 | .30 |
1996 | .30 | .30 |
1997 | .70 | .60 |
1998 | .70 | .60 |
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