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