Statistical studies on the development and the cyclical fluctuations of foreign trade from 1881 to 1913.

O., S. 15f). For the present data for trade, trade volume and price indices for foreign trade, the trend lines are in form of third degree parabolas (parabolic trend) to divide the effect of changes in development and changes in economic cycles. Changes in economic cycles are then represented as percentage deviations of the actual values (unbalanced values) from the trend values (balanced values).

The values for economic cycles are given for trade values, trade volume and for prices. “It is a pity that the development of German foreign trade in the 1970s cannot be taken into account. Only after a reform from 1879, data for exports was collected gapless and trough a new customs tariffs the values received a whole new meaning. Therefore, the values for the years before 1880 are not comparable with the latter values” (Soltau, F., 1916, a. a.

O., S. 20). The same analysis which was undertaken for Germany had been tried for the world trade. This analysis is based on the trade values themselves, which include changes in prices. 33 countries were taken into account and were divided into two groups: industrial middle Europe (Germany, Great Britain, France, Belgium, Switzerland and the Netherlands) and other countries containing Europe´s agrarian countries as well as important regions with important resources in America, Asia and Africa.

Special analysis had been undertaken for England, France and the United States. Data tables in HISTAT: A. Germany A.01 Changes in volume and prices of German foreign trade (1881-1913) A.02 Price index of the German foreign trade (1881-1913) A.03 Development of economic cycles in German foreign trade (1881-1913) B. World trade B01 Imports of foreign countries (1881-1913) B.02 Exports of foreign countries (1881-1913) C. Germany after the First World War C.01 Germanys foreign trade and number of fully employed persons, monthly data (1923-1926)