While two-parent families are still the most common type of family structure for families with children, there has been a huge increase in children born to, or raised in, single-parent families over recent decades. According to statistics from the U.S. Census, the proportion of single-parent families tripled between 1970 and 1990. In 2008, 70 percent of children in the U.S. lived with two parents, 23 percent lived with their mother only, 3.5 percent with their father only, and 3.8 percent lived with neither parent. However, there are considerable ethnic differences in the frequency of single-parent households. For example in 2008, 17 percent of European-American children, 51 percent of African-American children, 10 percent of Asian children, and 24 percent of Hispanic children lived with their mother in a single-parent family.