In the case of a number of developing countries, life presidents, absolute rulers, senior civil servants, military leaders and other members of ruling elites have diverted funds intended for the acceleration of the development process (received in the form of aid grants and bilateral or multilateral loans). In many of these countries capital flight remains the greatest constraint on achievement of agricultural and commercial self-sufficiency. In 1990 the President of Zaire, who came to power in 1965, was estimated to have a amassed a personal fortune of $6 billion (including much real estate in Europe), although he only claimed $50 million. Studies by the World Bank have identified hundreds of millions of dollars unreported in the national budget of Zaire, and more gold and coffee smuggled out of the country than legally exported. Another expression of the problem in government-led countries of all persuasions, is of parliamentarians unilaterally increasing their salaries or benefits, for which the usual strength of oppositional debate is often lukewarm.