Global ecommerce sales are expected to hit $1.5 trillion this year — a very healthy 20.1% increase from 2013. But a new study shows one surprising demographic is still devoted to shopping in brick-and-mortar stores: teenagers.

According to Piper Jaffray's 27th semi-annual Taking Stock With Teens market research project, 74% of female U.S. teens and 53% of male U.S. teens like shopping in physical stores more than the Internet.

Those percentages are decreasing quickly, however — only one year ago, 80% of male teens and 82% of female teens preferred shopping offline.

The following chart, created by Statista, shows how teenage ecommerce preferences have changed since spring 2013.

Image: Statista

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