Life expectancy - the average age a person is expected to live, Birth rate - Number of babies being born per 1000 per year, Death rate - Number of people dying per 1000 per year, Natural increase - The amount a population increases- calculated by subtracting the death rate from the birth rate, Literacy rate - The % of people over 16 who can read and write a simple sentence, % access to safe water - % of the population who can access safe water, Infant mortality rate - the number of babies dying between birth and exactly 1 year of age, expressed per 1,000 live births, Human Development Indicator - statistic composite index of life expectancy, education (Literacy Rate, Gross Enrollment Ratio at different levels and Net Attendance Ratio), and per capita income indicators, which are used to rank countries into four tiers of human development.,

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