Without question, Amazon is the growth engine for online retail in the United States. U.S. e-commerce grew by $58.6 billion in 2017, per U.S. Commerce Department figures, and Internet Retailer estimates the gross merchandise value of goods sold through Amazon-owned sites grew $42.61 billion. That means Amazon accounted for about 72.7% of U.S. e-commerce sales growth last year, up from 65.9% in 2016.

Here’s a historical look at Amazon’s sales growth, broken down by its first-party and marketplace sellers’ sales. This data shows Amazon’s share of e-commerce from 2012-2017. To view this data, you must be a Digital Commerce 360 Premium Member. If you’re a member, sign in. To learn more about Premium Memberships, click here.