Can the definition of "population" change over time according to the act?
Yes, the definition of "population" can change over time according to the act. The Explanation provided states that it means the population as ascertained at the last preceding census of which the relevant figures have been published. It also includes a proviso clarifying that until the relevant figures for the first census taken after the year 2026 are published, the reference to the last preceding census will be construed as a reference to the 2001 census.