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I'm confused by the bottom graph. Do you know why the percentage was so low from the 50s through 70s? Or maybe the question is why did it get higher during the 80s and 90s?
Posted by: JHM | Jul 09, 2012 at 10:52 AM
Not certain but I would bet the biggest change was the influx of women into the workforce beginning in the 1970s.
Posted by: Michael W. Kruse | Jul 09, 2012 at 11:00 AM
Good point.
Posted by: JHM | Jul 09, 2012 at 11:08 AM
It's indeed the influx of women + a fraction of the population that lived largely outside the money economy into the 60s -- think appalachian hillibillies, etc. subsisting off their land & odd jobs. Very hard to manage that today without a trust fund.
Posted by: hb | Jul 21, 2012 at 04:12 AM