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: "from 1960 to 2008 the percent of american adults who were obese rose how much percent?" whose answer is 63.8%.
Each document should contain about 30 words, and these documents should contain useful information.

Query: obesity rate 1960 2008 USA
Useful Output:

Doc 1: In national data from the survey period of 1960-1962, only about 13.4% of adults had obesity and less than 1% had severe obesity. And during
Doc 2: Obesity Rates. In the mid-1970s, the obesity rate for the United States was about 14% (meaning 14% of the population was categorized as obese).
Doc 3: A timeseries of excess weight and obesity is shown in the chart  The United States had the highest measured percentage of people who were obese
Doc 4: Obesity rates were relatively stable between 1960 and 1980. MEN GETTING FATTER. "Over the last decade, which would be 1999 through 2008, we
Doc 5: In the early 1960s, roughly 13% of people were considered obese by Centers for Disease Control and Prevention (CDC) guidelines. Recent figures