Original sentence: Household sample surveys conducted by the Kerala Statistical Institute, the last of which were in 2000, produced estimates which are:.The last caste census in Kerala was conducted in 1968.There is no accurate way to measure the present Nair population
Edited sentence: Since the last caste census in Kerala was conducted way back in 1968, there is no accurate way to measure the Nair population as of now.The estimates are given below:.The most reliable method is based on household sample surveys by Kerala Statistical Institute, which were conducted in 2000