Report - GeschGeschääftsentwicklungftsentwicklung Technische ...€¦ · 1940 1950 1960 1970 1980 1990 2000 2010 2020 Mio Tons 2009: 230 1989: 100 1976: 50 1950: 1,5 2002: 200 1985: 50 2009:

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