Here are the top five and bottom five nations ranked by rates of sexual satisfaction reported to University of Chicago researchers.

The findings are from the Global Study of Sexual Attitudes and Behaviors, published in April's Archives of Sexual Behavior.

TOP FIVE

1. Austria: 71.4 percent are satisfied with their sex lives.

2. Spain: 69 percent

3. Canada: 66.1 percent

4. Belgium: 64.6 percent

5. United States: 64.2 percent

BOTTOM FIVE

25. Thailand: 35.9 percent

26. China: 34.8 percent

27. Indonesia: 33.9 percent

28. Taiwan: 28.6 percent

29. Japan: 25.7 percent.