Reader's Digest is a monthly magazine. Before the 1980s, it belonged to a privately held company, which was started in 1922 by Lila Bell Wallace and Dewitt Wallace. This magazine is small and easy to carry, just half the size of most American magazines, which caused a phrase in 2005, "America in your pocket." It is the best selling magazine in the USA. At present, its circulation in the USA has reached 10 million copies and the number of the readers there is 38 million. It also has 40 million overseas readers in more than another 70 countries. This magazines focus  is not news but more of cultural views because the editors think people now can get timely news from somewhere else. They hope this magazine can give readers something that is about special personal experiences, something the readers can share with their families. In different countries, this magazine provides a window to the world for the local  readers. Some parts of the magazine are about the local customs and interests of the local readers. The other parts give the local readers information from all over the world. How often does Reader's Digest come out in the USA?
Once a year. Once a month. Once a week. Once a day.