At the end of 2017, average public debt in Sub-Saharan Africa was 57 percent of its GDP, an increase of 20 percentage points in just five years. This is according to Abebe Selassie, Director of the African Department at the IMF. CNBC Africa’s Esther Awoniyi caught up with him, for a discussion about Africa’s growth prospects this year. http://cnbc.africa/videos/