Back in 2012, the Boston Consulting Group (BCG) estimated the size of the broader 'Internet economy' would reach USD 4.2 trillion by 2016, equivalent to 5.3% of total GDP for G-20 economies alone (an increase in share from 4.1% of total GDP in 2010). While these estimates vary, they are all large - and growing. Internet user penetration is projected to reach 17.5% in LDCs in 2017, up from 15.6% in 2016, according to ITU esbmates.