The economy of Sudan has boomed on the back of increases in oil production, high oil prices, and large inflows of foreign direct investment until the second half of 2002. GDP growth registered more than 10% per year in 2006 and 2007. From 1997 to date, Sudan has $30.873 billion by gross domestic product as of 2019, and has been working with the International Monetary Fund (IMF) to implement macroeconomic reforms, including a managed float of the exchange rate. Sudan began exporting crude oil in the last quarter of 1999. Agricultural production remains important, because it employs 80% of the work force and contributes a third of the GDP. The War in Darfur, the aftermath of two decades of war in the Second Sudanese Civil War (1983-2005) in the south, the lack of basic infrastructure in large areas, and a reliance by much of the population on subsistence agriculture ensure much of the population will remain at or below the poverty line for years. The problem remains, despite rapid rises in average per capital income. In January 2007, the government introduced a new Sudanese pound, at an initial exchange rate of US$1 = £S.2. Sudan is still a least developed country according to United Nations. History Current GDP per capita of Sudan grew 46% in the 1960s, reaching a peak growth of 170% in the 1970s. But this proved unsustainable and growth consequently scaled back to 34% in the 1980s. Finally, it shrank by 26% in the 1990s. Until the early 1970s Sudan's agricultural output was mostly dedicated to internal consumption. In 1972 the Sudanese government became more pro-Western, and made plans to export food and cash crops. However, commodity prices declined throughout the 1970s causing economic problems for Sudan. At the same time, debt servicing costs, from the money spent mechanizing agriculture, rose. In 1978 the International Monetary Fund (IMF) negotiated a Structural Adjustment Program with the government. This further promoted the mechanized export agriculture sector. This caused great economic problems for the pastoralists of Sudan. During the late 1970s and 1980s, the IMF, World Bank, and key donors worked closely to promote reforms to counter the effect of inefficient economic policies and practices. By 1984, a combination of factors, including drought, inflation, and confused application of Islamic law, reduced donor disbursements and capital flight led to a serious foreign-exchange crisis and increased shortages of imported inputs and commodities.