Data SheetsPRB is known the world over for our data sheets. These colorful wallcharts contain the latest population estimates, projections, and other key indicators for countries and world regions, including such demographic variables as births, deaths, natural increase, infant mortality, total fertility, life expectancy, urban population, HIV/AIDS prevalence, contraceptive use, GNI PPP per capita, land area, and population per square kilometer. Topics range from world population to the environment to youth to women.