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 2008 USA
Useful Output:

Doc 1: In 2008, 9.8% of men and 13.8% of women in the world were obese (with a BMI 30 kg/m2), compared with 4.8% for men and 7.9% for women in 1980 (32). An estimated
Doc 2:  2008. Overweight prevalence increased from 36.9% in 1976 to 62.0% in 2008. During 1991-2008, obesity prevalence for US-born adults increased
Doc 3: Nearly 1 in 4 adults is projected to have severe obesity by 2030 (24.2%; 95% CI, 22.9 to 25.5), and the prevalence will be higher than 25% in 25 states.
Doc 4: Someone with a BMI of 30 or more is considered obese. According to the State of Childhood Obesity, adult obesity rates exceeded 35% in 17 states
Doc 5: The latest federal data show that nearly 40 percent of American adults were obese in 2015–16, up from 34 percent in 2007–08. The prevalence of