Is it true that the three basket-case countries of Europe - Greece, Ireland and Iceland - have outperformed Germany on real GDP and productivity growth? Or do the implausible official numbers demonstrate the bankruptcy of the global economic statistical system?

These charts show that the three basket-case countries of Europe - Greece, Ireland and Iceland - substantially outperform Germany during the boom years, which is to be expected (blue bars). For example, Greece had productivity growth averaging 2.4% per year from 1997 to 2007, compared to only 1% per year for Germany.
What is more surprising is that Greece, Ireland and Iceland continue to outperform Germany, even when we factor in the five years of the bust, including forecasts through 2012 (the red bar). For example, average real GDP growth in Iceland is projected to be 2.7% annually over the 1997-2012 time period, almost double the 1.4% growth rate of Germany.
What can we make of these disparities? After all, we economists have been trained to believe that productivity growth is an essential measure of the health of an economy. Here are four possible explanations:
- OECD forecasters have drunk too many bottles of wine, leading to over-optimistic forecasts.
- Five years post-bust is too short: The basket-case countries will be suffering for many years.
- Boom-and-bust beats slow-and-steady in the long-run.
- The usual way of measuring Gross Domestic Product overestimates both debt-fueled growth (Iceland, Greece) and growth fueled by supply chains (Ireland).
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