Married couples not only earn more than non-married people, they tend to economize on the costs of running their households, allowing them to save and invest at higher rate.

• 结婚的夫妻不仅比不结婚的挣得多，而且在家庭运转的支出中，他们往往节省，使得他们省下钱来并以更高的回报投资。