@techreport{Martin2017,
author = {Martin, J.A. and Hamilton, B.E. and Osterman, M.J.K. and Driscoll, A.K. and Mathews, T.J.},
title= {Births: Final data for 2015},
year = {2017},
URL = {https://www.cdc.gov/nchs/data/nvsr/nvsr66/nvsr66_01.pdf},
publisher = {Centers for Disease Control and Prevention},
address = {Atlanta},
number = {National Vital Statistics Reports 66-1},
}