Investigate differences between counties for a single year of data. An alternative "bubble chart" is used to give a sense of proportionality for counties that have high rates of unemployment but have a very small population.
Quickly see the same visualizations as the one above for the years 2004 through 2014. You can clearly see the effect of the 2008-2009 recession as the unemployment rate is color on an absolute scale.
Compare two years with each other directly, by taking the difference of each metric (unemployment rate, establishments and average weekly wage) and rendering the difference.