Mar 16, 2006 · Communiqué on Major Data of 1% National Population Sample Survey in 2005. National Bureau of Statistics. 16 March 2006. Approved by the State Council, China carried out 1% National Population Sample Survey at the end of 2005. With the whole country as the population, and provinces, autonomous regions and municipalities as the sub-population, the sampling method of stratified, multi-stage ...