Data

The data I used for the United States was a csv file from http://www.census.gov/popest/data/state/asrh/2014/SC-EST2014-AGESEX-CIV.html . I removed the unnecessary columns and renamed the remaining ones. Each of the other countries was taken from the Population by Single Year Groups from https://www.census.gov/population/international/data/idb/region.php. I edited the columns to match the state ones and combined them into 1 csv.