For-the-first-postwar-years-only-a-few-statistic-documents-are-available-Therefore-the-datatables-usually-begin-with-the-year-1950-Time-series-from-1950-to-1959-changes-in-the-territorial-boarders-because-data-of-the-Saarland-andor-Berlin-west-often-could-not-be-included-into-the-federal-sum-for-methodical-or-technical-reasons-see-annotations-in-the-datatables-The-notes-in-the-individual-tables-give-information-about-the-following-areas-1947-to-1959-Earlier-federal-territory-withwithout-Saarland-withwithout-Berlin-from-1960-Earlier-federal-territory-incl-Saarland-and-Berlin-west-from-1947-new-countries-and-Berlin-east-from-1991-Germany