Bihar has become the first state to release data from a caste-based survey. The report indicates 36 per cent of the population are from Extremely Backward Classes, 27.1 per cent are from Backward Classes, 19.7 per cent are from Scheduled Castes and 1.7 per cent are from Scheduled Tribes. The general population is 15.5 per cent. The state's total population is over 13.1 crore. The survey also said the Yadav community - the group to which Deputy Chief Minister Tejashwi Yadav belongs - is the largest sub-group, accounting for 14.27 per cent of all OBC categories.