METHODOLOGY: MAU represents Monthly Active Users (the number of unique Facebook users in a 30 day period) For enumeration of population :Population 2011 obtained from Census 2011 age group data. nQx obtained from abridged life tables 2012-16 *nQx : Probability of dying between years x & x+n  2016 Population = 2011 Population (1-nQx) CAGR calculated from 2011 to 2016 .Population 2018 calculated based on CAGR increase from 2011-2016