You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what is the percentage of single parents in america?" whose answer is 28%.
Each document should contain about 30 words, and these documents should contain useful information.

Query: percentage of single parents in america
Useful Output:

Doc 1: The proportion of single-parent families also varies widely by race and ethnicity. According to the U.S. Census Bureau's Current Population
Doc 2: In 2022, more than a third (37%) of kids in U.S.-born families lived in a single-parent household compared to just a quarter (25%) of kids in
Doc 3: In 2020 nearly 19 million children, amounting to 25 percent of all children in the U.S., were living in single-parent families. That percentage
Doc 4: And 81% of those single parent homes are headed by a mom. This has been a growing trend since the late 1960s. The number of kids being raised by
Doc 5: Percentage of households led by a single mother with children under age 18 living in the household in the U.S. in 2021, by state* · 6.19% · 5.86