@techreport{U.S. Census Bureau2010,
author = {U.S. Census Bureau, Population Division },
title= {Resident population by sex and age: 1980 to 2010. U.S.Census Bureau, Population Division [On-line]. },
year = {2010},
URL = {http://www.census.gov/compendia/statab/2012/tables/12s0007.pdf},
}