Official statistics with regard to internationalisation activities do not provide concise data on the liberal professions. Hence, there are no statistics which contain comprehensive data on the different types of internationalisation activities, enterprise sizes and legal forms. Furthermore, smaller contract volumes are not sufficiently covered by the available statistics. Therefore, it is not possible to generate reliable data with regard to the internationalisation activities of liberal professions in general, nor for the special subgroup of architects in particular. From 2014 onwards, balance of payments data from the German Bundesbank will provide more detailed information on transactions which are usually carried out by liberal professions. However, in order to substantially improve the availability and quality of data on internationalisation activities, the statistical reporting requirements imposed on enterprises would have to be considerably increased.
Kranzusch, P. (2013): Auslandsumsätze von freiberuflich geprägten Wirtschaftszweigen am Beispiel der Architekten - ein Vergleich verschiedener Datenquellen, in: Institut für Mittelstandsforschung Bonn (Hrsg.): Daten und Fakten Nr. 6, Bonn.