The economy is a mixture of subsistence agriculture, an industrial sector based largely on oil, and support services. Oil has supplanted forestry as the mainstay of the economy, providing a major share of government revenues and exports. In the early 1980s, rapidly rising oil revenues enabled the government to finance large-scale development projects with GDP growth averaging 5% annually, one of the highest rates in Africa. Economic reform efforts have been undertaken with the support of international organizations, notably the World Bank and the IMF. However, the reform program came to a halt in June 1997 when civil war erupted. However recovery of oil prices has boosted the economy's GDP and near-term prospects. In 2006 the World Bank and the International Monetary Fund (IMF) approved Heavily Indebted Poor Countries (HIPC) treatment for Congo.