Nowhere for Amazon to go but up
Amazon was responsible for 44 percent of all U.S. e-commerce sales last year, or about 4 percent of the country's total retail sales, according to One Click Retail.
According to CNBC, One Click Retail found the fastest-growing product groups on Amazon.com in 2017 were luxury beauty (up 47 percent from a year ago), pantry items (up 38 percent), grocery (up 33 percent) and furniture (up 33 percent).
"Every major trend we see across 2017 can be explained by the fact that more of Amazon's core demographic (millennials) are growing up: they're increasingly owning homes, raising children, and buying a TON of stuff to go with it," One Click Retail CEO Spencer Millerberg wrote in an annual review of Amazon.
Read more about Amazon's sales here.