Tuvalu civil registration and vital statistics report
While countries have multiple sources of demographic data, administrative data sources, and in particular civil registration systems are universally recognised for their fundamental function of providing governments with a continuous and permanent source of population data and statistics. Civil registration systems collect information on vital events (primarily on births, deaths [Including cause of death information]) as they occur, making it possible to derive annual, sub-annual and geographically disaggregated population data and statistics.
The advantages posed by well-functioning civil registration systems extend beyond the robustness and the frequency of the data that they collect, to their economic value; being possibly the most cost effective national sources of population data.