% population of USA
% http://fisher.lib.virginia.edu/census/

clear all

usapop=[1790 3929214;
1800 5308483;
1810 7239881;
1820 9633822;
1830 12866020;
1840 17069458;
1850 23191876;
1860 31443321;
1870 38558371;
1880 50155783;
1890 62979766;
1900 76303387;
1910 91972266;
1920 105710620;
1930 122775046;
1940 131669275;
1950 151325798;
1960 179323175;
1970 203302031;
1980 226542199;
1990 248718301;
2000 281421906];

tim=usapop(:,1);
popul=usapop(:,2);

