Economy of North Korea
Estimating gross national product in North Korea is a difficult task because of a dearth of economic data and the problem of choosing an appropriate rate of exchange for the North Korean won, the nonconvertible North Korean currency. The South Korean government's estimate placed North Korea's GNP in 1991 at US$22.9 billion, or US$1,038 per capita. In contrast, South Korea posted US$237.9 billion of GNP and a per capita income of US$5,569 in 1991. North Korea's GNP in 1991 showed a 5.2% decline from 1989, and preliminary indications were that the decline would continue. South Korea's GNP, by contrast, expanded by 9.3% and 8.4%, respectively, in 1990 and 1991.
Economy of North Korea
In late 2009, North Korea revalued its currency, effectively confiscating all privately held money above the equivalent of US$35 per person. The revaluation effectively wiped out the savings of many North Koreans. Days after the revaluation the won dropped 96% against the United States dollar. Pak Nam-gi, the director of the Planning and Finance Department of North Korea's ruling Workers' Party, was blamed for the disaster and later executed in 2010.
In 2004 and 2006 laws were passed to codify rules for savings and commercial banking. However it was not until 2012 that North Korean banks started to seriously compete for retail customers. Competing electronic cash cards have become widely accepted in Pyongyang and other cities, but are generally not linked to bank accounts. North Korean banks have introduced retail products which permit a mobile phone app to make payments and top-ups.