Mobile spending in western Europe is set to increase elevenfold to €19.2 billion in 2017, according to a study from Forrester, Mashable reports.

Last year, Europeans spent €1.7 billion on mobile purchases, or 1% of total online sales. By 2017, mobile will account for 6.8% of total online sales - lagging just slightly behind the U.S.

The figure includes retail products, services, gift cards, magazine subscriptions and purchases made for in-store pickup; it does not include digital content designed for immediate consumption (such as apps or ringtones), payments made at physical checkouts with phones (i.e., NFC payments or checkout system Square) nor stock trades.

The amount individual shoppers are expected to spend on mobile will not increase substantially - on average, European consumers will spend €227 on mobile purchases in 2017, compared to €201 in 2011 - but the total number of mobile shoppers is forecast increase dramatically in that period, from 7.6 million in 2011 to more than 79 million, or about 45% of mobile phone owners, in 2017.