The Consumer Price Index rose 0.4% in September on a seasonally adjusted basis, after increasing 0.6% in August, the U.S. Bureau of Labor Statistics reported Oct. 13.

Over the past 12 months, the all-items index increased 3.7% before seasonal adjustment.

The index for shelter was the largest contributor to the monthly all-items increase, accounting for over half of the increase. An increase in the gasoline index was also a major contributor to the all-items monthly rise.

While the major energy component indexes were mixed in September, the energy index rose 1.5% over the month, BLS said. The food index increased 0.2% in September, as it did in the prior two months. The index for food at home increased 0.1% over the month, while the index for food away from home rose 0.4%.

The index for all items aside from food and energy rose 0.3% in September, the same increase as in August.

Indexes which increased in September include:

• Rent and owners’ equivalent rent
• Lodging away from home
• Motor vehicle insurance
• Recreation
• Personal care
• New vehicles

The indexes for used cars and trucks and for apparel were among those that decreased over the month, according to BLS data.