E-commerce accounted for 8.9 percent of all retail sales in 2017, according to the Commerce Department, a performance that marked an increase from 8.0 percent the year before. It sounds like a small slice of the overall market, but e-commerce as a share of overall sales had been growing rapidly every year since 2008.
It also accounts for a larger share of overall sales, depending on
whether service-oriented sectors are included in the definition of
retail. Non-store retailers, a category that includes mostly e-commerce,
brought in $624 billion in sales in 2017. According to the Commerce
Department data, total retail sales, plus food, came to $5.7 trillion,
making the e-commerce share of total retail sales about 11.4 percent.. . . more