United Nations System of National Accounts
The United Nations System of National Accounts (Eng. about "the system of national accounts of the United Nations," short abbreviation SNA or UNSNA ) is an international standard for the first time in 1953 for the creation of National Accounts. After minor changes in 1960 and 1964 1968, 1993 and 2008 revisions of the document have been developed.
The European System of Accounts ( ESA ) coincides broadly with the SNA.