This document discusses population and economic sectors in Spain. It describes Spain's population growth, which is influenced by natural growth from birth rates and death rates as well as migratory balance. The population density is unevenly distributed across Spain. While most people lived rurally in 1900, today 80% of Spain's 46 million inhabitants live in urban areas. The population is characterized by a slightly higher number of women than men and age distributions of 17% under 16, 66% between 16 and 64, and 17% over 65, with immigrants making up about 12% of the population. The document also outlines Spain's primary, secondary, and tertiary economic sectors and the percentage of the population that each sector employs.