This is due to a decrease the number of families with children, especially a decrease in the number of large families, and a growth in the number of one- or two-person households.
(This; is; due to a decrease the number of families with children, especially a decrease in the number of large families, and a growth in the number of one- or two-person households)
This
is
due to a decrease the number of families with children, especially a decrease in the number of large families, and a growth in the number of one- or two-person households