Question raised in Lok Sabha on Development Projects near Wildlife Habitats, 22/12/2017. Census of elephant is undertaken at the national level once in every five years. State-wise/UTs wise and region wise comparative estimated population of elephants of 2012 and 2017 as available in the Ministry are given in Annexure-I. State wise details of human causality/death during last three year from elephant attacks is given in Annexure II (a) , loss of human lives because of tiger attacks during the last three years and current year, in and around tiger reserves, as reported by state-wise is given in Annexure II (b), the casualties of elephants during 2015-2017 is given in Annexure II (c), the number of tigers which have died due to unnatural causes (including seizures), during last two years and the current year, is given in Annexure II (d) .