Reasons why they had more children;Actual age (years);Total Failure of contraception used;Total;61.57 Failure of contraception used;From 15 to 29 years old;54.30 Failure of contraception used;From 30 to 39 years old;72.85 Failure of contraception used;From 40 to 49 years old;57.77 Lack of knowledge of contraceptions;Total;19.94 Lack of knowledge of contraceptions;From 15 to 29 years old;4.37 Lack of knowledge of contraceptions;From 30 to 39 years old;4.04 Lack of knowledge of contraceptions;From 40 to 49 years old;27.42 Others;Total;23.92 Others;From 15 to 29 years old;41.33 Others;From 30 to 39 years old;27.66 Others;From 40 to 49 years old;21.03