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.
South Korean won
On June 23, 2009, the Bank of Korea released the 50,000-won note. The obverse bears a portrait of Shin Saimdang, a prominent 16th-century artist, calligrapher, and mother of Korean scholar Yulgok, also known as Yi I, who is on the 5,000-won note. This note is the first Korean banknote to feature the portrait of a woman. The release of the 50,000-won note stirred some controversy among shop owners and those with visual impairments due to its similarity in color and numerical denomination with the 5,000-won note.