This implies that African countries and development partners need to invest more resources in gathering data and refining the methodologies to establish baselines and monitor progress. Data and metadata for this indicator are available, and latest data for the majority of African countries are from 2014. For Africa, the proportion of the urban population living in slums declined to about 34 per cent in 2014, from 37.5 per cent in 2010 - a 3.6 per cent. The decline in the proportion of people living in slums can be attributed to the slum redevelopment and affordable housing programmes that several countries in the developing regions, including in Africa, have rolled out in the past years.