id	keyword
cpos-270	fertility
cpos-270	ctfr
cpos-270	district
cpos-270	germany
cpos-270	regional
cpos-270	city
cpos-270	factors
cpos-270	level
cpos-270	census
cpos-270	children
cpos-270	population
cpos-270	women
cpos-270	differences
cpos-270	cohort
cpos-270	number
cpos-270	specifi
cpos-270	percentage
cpos-270	east
cpos-270	district level
cpos-270	data
cpos-270	kulu
cpos-270	rate
cpos-270	west
cpos-270	analysis
cpos-270	effect
cpos-270	model
cpos-270	variables