St, Reagan's grand fail

In the context of a response to column by conservative commentator Ramesh Ponnouru, Paul Krugman @ NYTs makes a compelling case with...uh...data:

Reaganomics was not a success!

Look at median family income. The basic story of postwar America is one of big gains in the first generation, near-stagnation in the second and after, with fluctuation due to the business cycle. And Reagan did not break that pattern:

If you want a better assessment, you can look at growth between business cycle peaks. (Peaks are much more similar than troughs; all happy economies are alike, each unhappy economy is unhappy in its own way.) Here’s what you get (treating the 1979-82 double dip as a single recession):

These periods don’t match up neatly with presidential terms. Still, if Reaganomics had been such a spectacular success, you would have expected the results by 1990 to have been families doing better than in the horrible 1970s; actually, not. The only clear things we see here are that the Clinton era was pretty good, while the Bush era was lousy even before the crisis.