Jamaica experienced no economic growth in exports per capita from the Napoleonic Wars to the end of the Second World Wars. Since there is a high correlation between exports per capita and GDP per capita, at least after 1850, Bulmer-Thomas argues that there are solid grounds for concluding that the Jamaican economy on a per capita basis experienced no growth at all for more than a century after the end of slavery.
The news is not good:
Data compiled by Bulmer-Thomas shows that Jamaica’s GDP per capita is actually around the same level it was at independence.
The country ranks #2 on the Human Flight and Brain Drain Index.
Here is more from Rasheed Griffith, mostly on the economic history and economic problems of Jamaica.