worldpopVN: Population densities of Vietnam from WorldPop

#' Population centers of Vietnam in 2009
#'
#' An \code{sf} object containing the names and the coordinates of the
#' populations centers of the 63 provinces of Vietnam.
#'
#' The provinces are as defined from the first of January 2008 and the
#' population centers are calculated as explained
#' \href{https://choisy.github.io/2018/10/29/computing-population-centers}{here},
#' using the 2009 population sizes.
#'
#' @format An \code{sf} unprojected POINT object containing the coordinates of
#' the populations centers of each province together with the names of the
#' provinces that is \code{epi^x} compatible.
#'
#' @export
"popcenters2009"