Mobile commerce (mCommerce) accounted for 11.5% of all digital commerce in Q1 2014, totaling $7.3 billion in sales. Tablets generated 38% of mCommerce sales while smartphones accounted for 62%. MCommerce is expected to grow significantly, reaching an estimated $294 billion by 2018. In the United Kingdom, 18% of frequent online shoppers considered "super shoppers" are responsible for 70% of all online retail sales, with these consumers most likely to be between 25-44 years of age and evenly split between males and females.