period live births per year deaths per year natural change per year cbr1 cdr1 nc1 tfr1 imr1
period
live births per year
deaths per year
natural change per year
cbr1
cdr1
nc1
tfr1
imr1
minimum_number minimum_parsed minimum_year maximum_number maximum_parsed maximum_year
number
number
number
number
number
number
number
number
timespan number number number number number number number number
1950-1955 9000 5000 4000 47.9 27.1 20.8 6.67 184.8
which period had the highest imr ?
WDT NN VBD-AUX DT JJS NN .