Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. Credit union promotes the effective conservation of personal funds of its members, giving them the loans from the funds of the credit union, as well as the sharing of savings in education, housing, health care and other programs of social support and social development of its members. Over 30% of the assets of credit unions are investments in government securities, certificates of deposit of banks and savings loan associations, as well as in the parent credit unions, and other risk-free investments. Income derived from the provision of services to its members, does not become the profit of credit union and is distributed among its members in proportion to their savings. The supreme body of the World Council of Credit Unions is the Assembly, which elects the president and the board of directors of WOCCU. Credit unions, like today's credit unions, emerged in the 19th century in Germany as a result of crop failure and famine. Credit Union - a non-profit financial institution specialized in mutual financial assistance by providing savings and credit services to their members.