To what extent had the Nazis achieved an 'economic miracle' by 1939?

Reducing unemployment and stablising the economy after the 1924 hyperinflation crisis and the Wall Street crash of 1929 was a central theme to the Nazi party's political campaigns, and therefore it was imperative for the popularity and success of the regime that they be seen to deliver on their promises. By introducing the DAF and RAD and making labour a compulsory service through successive laws, they were able to reduce the unemployment figure from around 30% to under 1 million. Massive public works schemes, such as the construction of the Autobahns, established under Hjalmar Schacht, increasing the demand for workers and providing jobs in supporting industry. Such a reality likely seemed impossible in the later Weimar years, and so may be regarded as miraculous. However, if there was a 'miracle', it was illusory at best. Not unknown to forge statistics, the Nazis had excluded a significant number from the workforce by running their economic policy in tandem with the ideology. Women and Jews were progressively banned from certain professions and saw increasing limitations on their education, preventing their access to several fields such as law and medicine. The disabled and those imprisoned by the state were ignored, contributing to what has been termed the 'invisible unemployed', invalidating labour participation as evidence of a miracle.Moreover, although rearmament provided employment both within the military and its contractors, the Nazis stretched their economy beyond its capacity. The Mefo bills issued under Schacht amounted to little more than an idle promise by the time Poland was invaded, and imports continued to exceed exports, revealing a failure to achieve 'autarky'. The self-sufficiency and protectionism of Hitler and Goring led directly to the resignation of Schacht - far more of an economic expert than his superiors - and constrained the economic rather than boosting it. Businesses were heavily regulated, trade and banking interests harmed, state debts increased and wages frozen, amounting to little improvement in the lives of the workers and creating what would amount to severe problems in the long-term. The emphasis on the short-term and that the Nazis had to increase austerity measures, such as introducing rationing, as early as 1938 underlines the absence of any 'economic miracle' by the end of the decade.