This CD-ROM provides a comprehensive and consistent set of population data for the world’s countries and their aggregates. Information is provided for 229 countries and areas, 33 country aggregates, including the world as a whole, the more and the less developed regions, and the major areas. The Comprehensive CD-ROM contains for all fertility projection variants (low, medium, high and constant-fertility) all essential data such as total births, total deaths, total net-migration, the respective crude rates, life expectancy at birth by sex, infant and child mortality, total fertility, net-reproduction rate and population growth rates for 1950-2050 by five-year periods. It includes population by five-year age group and sex for five-year periods and interpolated annual total population. In addition, this CD edition provides births and deaths by five-year age group, the corresponding age-specific fertility and mortality rates and abridged life tables (survivors and life expectancies at specific ages). It also comprises standard sets of demo-graphic indicators and population by age group and sex for four other variants (instant-replacement-fertility, zero-migration, constant-mortality and no mortality and fertility change) and for three AIDS scenarios. All data on this CD are presented in Excel worksheets.