Other exports include timber, diamonds, garments, rum, and pharmaceuticals. The value of these other exports is increasing. Since 1986, Guyana has received its entire wheat supply from the United States on concessional terms under a PL 480 Food for Peace programme. It is now supplied on a grant basis. The Guyanese currency generated by the sale of the wheat is used for purposes agreed upon by the U.S. and Guyana Governments. As with many developing countries, Guyana is heavily indebted. Reduction of the debt burden has been one of the present administration's top priorities. In 1999, through the Paris Club "Lyons terms" and the Heavily Indebted Poor Countries (HIPC) initiative Guyana managed to negotiate $256 million in debt forgiveness. In qualifying for HIPC assistance, for the first time, Guyana became eligible for a reduction of its multilateral debt. About half of Guyana's debt is owed to the multilateral development banks and 20% to its neighbour Trinidad and Tobago, which until 1986 was its principal supplier of petroleum products. Almost all debt to the U.S. government has been forgiven. In late 1999, net international reserves were at $123.2 million, down from $254 million in 1994. However, net international reserves had rebounded to $174.1 million by January 2001. Guyana's extremely high debt burden to foreign creditors has meant limited availability of foreign exchange and reduced capacity to import necessary raw materials, spare parts, and equipment, thereby further reducing production. The increase in global fuel costs also contributed to the country's decline in production and growing trade deficit. The decline of production has increased unemployment. Although no reliable statistics exist, combined unemployment and underemployment are estimated at about 30%. Emigration, principally to the U.S. and Canada, remains substantial. Net emigration in 1998 was estimated to be about 1.4 percent of the population, and in 1999, this figure totaled 1.2 percent. After years of a state-dominated economy, the mechanisms for private investment, domestic or foreign, are still evolving. The shift from a state-controlled economy to a primarily mixed economic system began under Desmond Hoyte and continued under PPP/CIVIC governments. The current PPP/C administration recognizes the need for foreign investment to create jobs, enhance technical capabilities, and generate goods for export. The foreign exchange market was fully liberalized in 1991, and currency is now freely traded without restriction. The rate is subject to change on a daily basis, but the Guyana dollar has depreciated 17.6% from 1998 to 2000 and may depreciate further pending the stability of the post-election period.