What is GDP of Sierra Leone?

As per International Monetary Fund (IMF) 2019 estimates, the GDP (nominal) of Sierra Leone is USD 3,998 million. Currently (2019), the world rank of Sierra Leone is 154 in terms of GDP Nominal.
However, as per 2018 estimates by World Bank, the GDP (Nominal) of Sierra Leone is USD 4,000 million. As per World Bank Estimates, the global rank of Sierra Leone is 151.

Sierra Leone GDP [PPP]

On the other hand, as per 2019 estimates by International Monetary Fund, the GDP (PPP) of Sierra Leone is USD 13,079 Million. This is 0.01% of World. Sierra Leone on this basis has a global rank of 145.