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year | production | consumption |
1980 | | |
1981 | | |
1982 | | |
1983 | | |
1984 | | |
1985 | | |
1986 | | |
1987 | | |
1988 | | |
1989 | | |
1990 | | |
1991 | | |
1992 | 1.79 | 1.79 |
1993 | 1.70 | 1.70 |
1994 | 1.56 | 1.56 |
1995 | 1.53 | 1.53 |
1996 | 1.51 | 1.51 |
1997 | 1.48 | 1.48 |
1998 | 1.47 | 1.47 |
1999 | 2.00 | 2.00 |
2000 | 2.47 | 2.47 |
2001 | 2.81 | 2.81 |
2002 | 2.81 | 2.81 |
2003 | 2.03 | 2.03 |
2004 | 2.11 | 2.11 |
2005 | 2.90 | 2.90 |
2006 | 3.05 | 3.05 |
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