in 2005. This Act overhauled family legislation, replacing the Domestic Relations Act, the Maintenance Order Act, the Parentage and Maintenance Act, and parts of the Provincial Court Act and the Child, Youth and Family Enhancement Act, which were seen as outdated. Also, the Adult Interdependent Relationships Act (S.A. 2002, c. A-4.5) amended 69 Alberta laws. The Canadian Prairies provinces of Manitoba and Saskatchewan have strong common-law spouses regulations, imposing rights and obligations on common-law couples. Nova Scotia has also been very slow to advance family law – it was only in 1999 that this province abolished discrimination against "illegitimate" children with regard to inheritance (through section 16 of NS Intestate Succession Act amended in 1999). In general, today, provinces in Western Canada give more rights to common-law spouses than those in Atlantic Canada and in Quebec. This may seem quite paradoxical, because it is the eastern provinces which have the strongest tradition of cohabitation; according to a study "unmarried cohabitation seems to be more common in Eastern Canada than in Western Canada, which might be related to internal and international migration". (as of 2012, 48% of births in New Brunswick, 47.1% in Newfoundland and Labrador, and 45.2% in Nova Scotia, were listed to "single mothers", way above the national average). In British Columbia, the Family Law Act came into force in 2013. United States Cohabitation in the United States became common in the late 20th century. , 4.85 million unmarried couples were living together, and , about half of all women aged 15 to 44 had lived unmarried with a partner. In 2007, it is estimated that 6.4 million households were maintained by two opposite sex persons who said they were unmarried. In 2012, the General Social Survey found that public disapproval of cohabitation had dropped to 20% of the population. Researchers at the National Center for Family and Marriage Research estimated in 2011 that 66% of first marriages are entered after a period of cohabitation. According to the 2009 American Community Survey conducted by the Census Bureau, the proportion of 30- to 44-year-olds living together has almost doubled since 1999, from 4% to 7%. Fifty-eight percent of women aged 19 to 44 had ever cohabited in data collected in 2006–08, while in 1987 only 33% had. Cohabitation is more prevalent among those with less education. "Among women ages 19 to 44, 73% of those without a high school education