In the First Burmese Socialist Programme Party (BSPP) Congress in 1971, several minor economic reforms were made, in light of the failures of the economic policy pursued throughout the 1960s. The Burmese government asked to rejoin the World Bank, joined the Asian Development Bank, and sought more foreign aid and assistance. The Twenty-Year Plan, an economic plan divided into five increments of implementation, was introduced, in order to develop the country's natural resources, including agriculture, forestry, oil and natural gas, through state development. These reforms brought living standards back to pre-World War II levels and stimulated economic growth. However, by 1988, foreign debt had ballooned to $4.9 billion, about three-fourths of the national GDP, and Ne Win's later attempt to make the Kyat based in denominations divisible by 9, a number he considered to be auspicious, led to the wiping of millions of savings of the Burmese people, resulting in the 8888 Uprising.