Our US online retail forecast update in Q4 found a slightly faster uptake in eCommerce sales in 2014, which are projected to grow at an 11.1% compound annual growth rate (CAGR) by 2018. The increase is primarily driven by the growth in spend per buyer, which will be well over $2,000 by 2018. The forecast details growth across 30 product categories and historical data going back to 1998, and it calculates the share of online retail sales for each product category.