demdata: Demographic data

#' Number of New Zealanders enrolled in school, by age, sex, and region, 1996-2016.
#'
#' Numbers of New Zealanders aged 5 and above, enrolled in school, by
#' age, sex, and regional council area, on 1 July of each year.
#'
#' Students in the Chatham Islands have been recoded to the Canterbury region.
#' 
#' @format An array with dimensions "age", "sex", "region", and "year".
#'
#' @source Downloaded from New Zealand Ministry of Education website,
#' \url{https://www.educationcounts.govt.nz/statistics/schooling/student-numbers/6028}
#' on 23 Jun 2017.
#'
"nz.school"