grass, or too weak to accept alms, while instances of cannibalism were common. The modern consensus is the population of the Holy Roman Empire declined from 18 to 20 million in 1600 to 11 to 13 million in 1650, and did not regain pre-war levels until 1750. Nearly 50% of these losses appear to have been incurred during the first period of Swedish intervention from 1630 to 1635. The high mortality rate compared to the Wars of the Three Kingdoms in Britain may partly be due to the reliance of all sides on foreign mercenaries, often unpaid and required to live off the land. Lack of a sense of 'shared community' resulted in atrocities such as the destruction of Magdeburg, in turn creating large numbers of refugees who were extremely susceptible to sickness and hunger. While flight saved lives in the short-term, in the long run it often proved catastrophic. In 1940, agrarian historian Günther Franz published a detailed analysis of regional data from across Germany covering the period from 1618 to 1648. Broadly confirmed by more recent work, he concluded "about 40% of the rural population fell victim to the war and epidemics; in the cities,...33%". These figures can be misleading, since Franz calculated the absolute decline in pre and post-war populations, or 'total demographic loss'. They therefore include factors unrelated to death or disease, such as permanent migration to areas outside the Empire or lower birthrates, a common but less obvious impact of extended warfare. There were also wide regional variations; some areas in Northwest Germany were relatively peaceful after 1630 and experienced almost no population loss, while those of Mecklenburg, Pomerania and Württemberg fell by nearly 50%. Although some towns may have overstated their losses to avoid taxes, individual records confirm serious declines; from 1620 to 1650, the population of Munich fell from 22,000 to 17,000, that of Augsburg from 48,000 to 21,000. The financial impact is less clear; while the war caused short-term economic dislocation, especially in the period 1618 to 1623, overall it accelerated existing changes in trading patterns. It does not appear to have reversed ongoing macro-economic trends, such as the reduction of price differentials between regional markets, and a greater degree of market integration across Europe. The death toll may have improved living standards for the survivors; one study shows wages in Germany increased by 40% in real terms between 1603 and 1652.