Post Correction

I made a mistake (gasp) when putting this post together.

A chart and graph were put together listing year over year % change in GDP 1912 to 1928, using current dollar and three different constant dollar bases.  The column farthest to the right (2005 prices) and the corresponding blue line on the graph is in error.  The data are displaced by one year.  Assembling the data table was too painful a process to go through again.  Mentally slide each value in the right hand column up a notch, if you care to. 

Here is a correction of the graph, which now shows all the data sets moving pretty much in lock-step, though by different step-sizes.