Datasets containing the United Nations time series of the life expectancy (e0) for all countries of the world as available in 2012. Datasets e0F and e0F_supplemental contain estimates for female historical e0; e0M and e0M_supplemental contain estimates for male historical e0. The *_supplemental datasets contain a subset of countries for which data prior 1950 are available. Datasets e0Mproj and e0Fproj contain projections of male and female e0, respectively. Datasets *80l, *95l are the lower bounds of 80 and 95% probability intervals, *80u, *95u are the corresponding upper bounds.