proposed measures included: the ending of price controls; devaluation of the kwacha (Zambia's currency); cut-backs in government expenditure; cancellation of subsidies on food and fertilizer; and increased prices for farm produce. Kaunda's removal of food subsidies caused massive increases in the prices of basic foodstuffs; the country's urbanized population rioted in protest. In desperation, Kaunda broke with the IMF in May 1987 and introduced a New Economic Recovery Programme in 1988. However, this did not help him and he eventually moved toward a new understanding with the IMF in 1989. In 1990 Kaunda was forced to make a major policy volteface: he announced the intention to partially privatize the parastatals. Time, however, was running out for him. Like many African independence leaders Kaunda tried to hang on to power but unlike many he called multiparty elections and lost them (to the Movement for Multiparty Democracy (MMD))and abided by the results. Kaunda left office with the inauguration of MMD leader Frederick Chiluba as president on 2 November 1991. Chiluba's economic reforms (1991–2000) Zambia's Economic System of Government is Unitary because of that the Frederick Chiluba government (1991–2001), which came to power after democratic multi-party elections in November 1991, was committed to extensive economic reform. Zambia's economic transformation into a free market system began toward the end of 1991 following a change of government. To tackle a serious economic crisis, the government agreed to introduce substantial economic reforms to secure much-needed loans from the World Bank and IMF. One of the greatest challenges was the privatization of the country's copper mines, Zambia's prime export earner. The government privatised many state industries, and maintained positive real interest rates. Exchange controls were eliminated and free market principles endorsed. It remains to be seen whether the Mwanawasa government will follow a similar path of implementing economic reform and undertaking further privatization. Zambia has yet to address issues such as reducing the size of the public sector, which still represents 44% of total formal employment, and improving Zambia's social sector delivery systems. After the government privatized the giant parastatal mining company Zambian Consolidated Copper Mines (ZCCM), donors resumed balance-of-payment support. The final transfer of ZCCM's assets occurred on March 31, 2000. Although balance-of-payment payments are not the answer to Zambia's long-term debt problems, it will in the short term provide the government some breathing room to implement further economic reforms. The government has, however, spent much