While the proportion of wives working year-round in married couple households with children has increased from NUMBER@1 % in NUMBER@2 to NUMBER@3 % in NUMBER@4 , the proportion of such households among the general population has decreased .

For example , while the proportion of wives working year-round in married couple households with children has increased from NUMBER@1 % in NUMBER@2 to NUMBER@3 % in NUMBER@4 , the proportion of such households among the general population has decreased .
