Source: US. Bureau of Labor Statistics
Release: Consumer Price Index
US. Bureau of Labor Statistics, Consumer Price Index for All Urban Consumers: Utility (piped) gas service in South - Size Class D (under 50,000 persons) [CUUSD300SEHF02], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CUUSD300SEHF02, September 27, 2016.