Source: US. Bureau of Labor Statistics
Release: Consumer Price Index
US. Bureau of Labor Statistics, Consumer Price Index for All Urban Consumers: Transportation commodities less motor fuel in Midwest - Size Class D (under 50,000 persons) [CUUSD200SATCLTB], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/CUUSD200SATCLTB/, September 4, 2015.