First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. Among the U.S. credit unions, there are three groups that differ in terms of assets, shareholders, and business services. National Credit Union Insurance Fund was created by Congress in 1970 to insure deposits of credit union members in the amount of 100 thousand dollars. As of the January 1, 2012 the national associations and confederations unite more than 196 million members participating in the 51,013 credit unions in 100 countries. The right to use the services of the credit union have only its members.