us_income
=========

Nominal per capita income for the lower 48 US states 1929-2009
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* states48.gal: queen contiguity weights in GAL format.
* us48.dbf: attribute data. (k=8)
* us48.shp: Polygon shapefile. (n=48)
* us48.shx: spatial index.
* usjoin.csv: 48 US states nominal per capita income time series 1929-2009.
