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Small Multiple Choropleth Map

Small multiples choropleth map. Color shows the annual percent change in the number of manufacturing jobs. Red is a decline, blue is growth.

Three recessions are covered in this timespan: July 1990 to March 1991, March 2001 to November 2001, and December 2007 to June 2009 (see NBER's business cycle dates).

In a real world situation you wouldn't want to have the user's browser do all the computation needed to draw these maps. The maps are rendered in <canvas> so it would be fairly straightforward to pre-render them as images and to serve those instead.

Source: Bureau of Labor Statistics' QCEW program