#' GDP, population, and HIV prevalence for the countries of the world
#'
#' GDP, population, and HIV prevalence for the countries of the world
#'
#' @docType data
#'
#' @usage data(welfare)
#'
#' @format A data frame with GDP, population, and HIV prevalence for the countries of the world.
#'
#' @keywords datasets
#'
#' @source \href{http://datatopics.worldbank.org/world-development-indicators/}{World Bank Development Index}
#'
#' @examples
#' data(welfare)
'welfare'
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