Engemann, Kristie M.; Owyang, Michael T. - In: The Regional Economist (2006) Apr, pp. 10-11
The ranks of women in the workforce jumped by more than 24 percentage points between 1955 and 1999. Credit labor-saving devices at home (such as the dishwasher), the birth-control pill and the preference by some men to marry a woman who works outside the home.