This graph, called a treemap, shows Smith County's economy divided into the categories of the North American Industry Classification System.
Each box is scaled relative to the proportion of economic activity it represents. Click on any category with an arrow next to it's name to drill down and get more detail. The category you are currently viewing is listed across the top.
Data for this application is taken from the 2010 annual summary of the Bureau of Labor Statistics' Quarterly Census of Employment and Wages.
Move your mouse over the graph for additional details.