![]() We divide the child population by the appropriate population of child-bearing age to generate the CPRs. For cohorts 0-4 and 5-9, CPRs capture the birth rates in the prior decades.population, with data from 1990, 2000, and 2010 and use the average of the CCR and CPR values over 10, to smooth out fluctuations. We generate CPRs (child population ratio) and CCRs (cohort change ratio) for each age cohort of the This is the final national level population projection for 2020. population for 2020 is set to the sum of the state populations. Using 2017 as the launch year, we apply this exponential growth rate to get the final state level projections for 2020. ![]() The exponential growth rate for each of the 50 states and D.C., is calculated using population totals from 20. TOTAL POPULATION PROJECTIONS 2020 Total Population
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