The advantages or disadvantages firms experience as a result of their size, referred to in the economic literature as returns to scale, are of central importance in many economic models. Increasing returns to scale, whereby unit costs decrease as output volume increases, could explain productivity differences between Europe and the United States. We present fresh evidence on the returns to scale of European firms: most exhibit constant returns to scale, but a non-trivial share also show increasing returns to scale.

Germany's net external position stood at €1,476 billion at the end of 2015, and thus amounted to around 49 % of gross domestic product. The German net external asset position rose by €302 billion year-on-year.