Translate the following English paragraph into Chinese. Over recent decades in Europe, the family is one of the domains where the greatest changes have taken place. The traditional European nuclear family consisted of a married father and mother with several children, but today this is only one option among many. Declining marriage rates, an increased number of divorces, the wide acceptance of co-habitation, the legalization of same-sex marriage and dropping fertility rates have caused the size of the average household within the European Union to drop to 2.4 people. Yet family remains of the utmost importance to people. Eighty-four percent of Europeans say that family is very important, almost twice as many as those who find friends very important. Perhaps the most significant changes relate to childbearing, since these result in important demographic changes over time. Throughout Europe, having children is no longer considered a duty towards society, but rather just one of life’s options. The choice to stay childless is well accepted in many countries. The driving force behind these changes appears to be individualization. Values oriented towards autonomy, privacy, self-actualization and personal happiness have become more important, and have ousted values that point at collective goals.