Like in most European economies, public debt in Germany is characterized by a secular upward trend. There are reasons to believe that the current trend is not sustainable. The ratio of debt to GDP is expected to reach 76,5 percent this year (Deutsche Bundesbank 2010), which implies a ratio that is more than doubled since 1980. Looking at the time-series since the mid-1970s (e.g. Sachverständigenrat 2009, p. 373), one can infer that the responsibility for this long-term increase falls both to the federal and state governments, with the impact of the former being about three times as large as the impact of the latter. One can also infer that, after the Keynesian fiscal policy experiments in the 1970s, the debt-to-GDP ratio stagnated for much of the 1980s, and increased again in the early 1990s following the German re-unification. Following periods of stagnation are then punctuated by the end of the internet bubble at the beginning of the last decade, and by the recession following the most recent financial crisis.