A population census has been conducted every decade between 1961 and 2000. This is a key source of data for planning purposes and setting the framework for sample surveys conducted over the intercensal period. The 2000 Census was especially important because it was a complete count rather than a sample census, as had been the case from 1961-1990, it gave a picture of the country`s situation at the end of the 1997-1999 economic crisis. For the first time detailed census data could be utilized for very small area analysis - at the district, sub district and even the village levels, over almost the whole nation. Planners also use the annual SUSENAS (National Social and Economic Survey) to monitor demographic, economic and social change, but the sample is sometimes too small to support district level analysis of many important variables. For this reason, in recent years, Statistics Indonesia has been moving to increase the sample size of the SUSENAS, but this has produced many financial and organizational challenges. Project outputs.