Conditions improved in late 2002, when a large portion of the invading foreign troops withdrew. A number of International Monetary Fund and World Bank missions met with the government to help it develop a coherent economic plan, and President Joseph Kabila began implementing reforms. Much economic activity still lies outside the GDP data. A United Nations Human Development Index report shows that the human development index of DRC is one of the worst the country has had in decades. Through 2011 the DRC had the lowest Human Development Index of the 187 ranked countries. It ranked lower than Niger, despite a higher margin of improvement than the latter country over 2010's numbers.