America is a highly religious country, and has been since its earliest days. Nearly every religion in the world has adherents or organized institutions in the United States. American religious institutions are large, powerful and influential in social and political life. Even Americans who are members of no established religion are likely to believe in God. According to a Gallup opinion survey, nearly all Americans, 98% of them, do, compared to 84% in Switzerland, 73% in France and 60% in Sweden. Americans also tend to believe in life after death: 73% compared to 50% in Switzerland and only 38% in Great Britain. About 60% of Americans are members of a church, synagogue or other religious group, though many more identify with various religions because of their birth or upbringing. About 40% of Americans attend religious services regularly, compared to only 20% in Great Britain.