Headline consumer prices increased 1.5 percent on a year-over-year basis in September, up from 1.1 percent in August. On a one-month annualized basis, headline consumer price inflation rose 3.6 percent in September from 2.5 percent in August. The acceleration in September was largely the result of an increase in the index for energy commodities, which rose 41.5 percent on a one-month annualized basis, the largest escalation since April. The core measure, which excludes food and energy, was up 2.2 percent year over year. The core measure has shown very little change since one year ago, when the year-over-year increase was 1.9 percent.
