This fascinating infographic from NPR's Planet Money blog traces "the common job" in each state from 1978 to 2014. What emerges is a story of changing economic, demographic, and technological constellations over a period of 36-years. Readers will notice that several themes stand out. First, there are a lot of truck drivers. This is partially due to a very inclusive census category. But it's also true that truck drivers can't be downsized or outsourced. Second, manufacturing jobs disappeared from the list in the 1980s. Third, secretaries were likely put out of business by the personal computer. This snappy presentation of complex information will light up readers who love a good dose of well-presented data.