That's a 300M population...today. Assuming avg US life expectancy of 75 years, that's another 4M in turnover for every year that they have data for, plus I assu

That's a 300M population...today. Assuming avg US life expectancy of 75 years, that's another 4M in turnover for every year that they have data for, plus I assume records of another ~150-250M records from those that have only stayed in the US temporarily and aren't reflected in census numbers.