Consumer prices fell for the first time in 16 months in August as lower gasoline prices pulled the energy index and overall prices lower; moreover, core prices were flat, the first time since October 2010 that the core price index did not increase..  The Consumer Price Index for All Urban Consumers (CPI-U) for August from the Bureau of Labor Statistics showed that seasonally adjusted prices fell by 0.2% after rising only 0.1% in July..  The unadjusted CPI-U, which was set with prices of the 1982 to 1984 period equal to 100,