We expect US eCommerce to enjoy a double-digit year-over-year growth rate heading into 2015. While online buyer growth approaches maturation, the continual shift in wallet share will drive the projected 10% compound annual growth rate (CAGR) of online retail spending over the next five years. By 2020, the online spend per buyer will reach $2,500, a 7% annual increase from 2015. The forecast details growth across 31 product categories with historical data going back to 1998, and it calculates the share of online retail sales for each product category.