## ----include = FALSE----------------------------------------------------------
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

## ----eval = FALSE-------------------------------------------------------------
#  # download treated population data at the state level for 2010 to 2012
#  data <- load_population(
#    raw_data = FALSE,
#    geo_level = "state",
#    time_period = 2010:2012
#  )