id	keyword
cpos-272	fertility
cpos-272	cohort
cpos-272	transition
cpos-272	fertility transition
cpos-272	east
cpos-272	birth
cpos-272	cohort fertility
cpos-272	populations
cpos-272	countries
cpos-272	europe
cpos-272	south
cpos-272	european
cpos-272	total
cpos-272	century
cpos-272	trends
cpos-272	women
cpos-272	data
cpos-272	low
cpos-272	fig
cpos-272	western
cpos-272	20th