New GNP estimates for the Belgian economy during the interwar period

New GNP estimates in current and constant prices for the Belgian economy in the interwar period are presented. The series are conceptually and methodologically consistent with the post-World War II data and cover both the income and expenditure approaches. The new estimates differ considerably from the data that have been published before, casting new light on our present understanding of Belgian economic growth in the 1920s and 1930s.