id	keyword
cpos-224	population
cpos-224	age
cpos-224	population growth
cpos-224	age composition
cpos-224	age population
cpos-224	rate
cpos-224	population transition
cpos-224	growth rate
cpos-224	china
cpos-224	india
cpos-224	fertility
cpos-224	mortality
cpos-224	change
cpos-224	birth rate
cpos-224	effects
cpos-224	increase
cpos-224	demographic
cpos-224	composition effects
cpos-224	death rate
cpos-224	decrease