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;54,3 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