From the Marginal Revolution:
"If you are wondering, the World Bank measures Cuban GDP at over $6,000 per capita, but that is based on a planned economy and an unrealistic exchange rate. In reality, Cuba probably is richer than Nicaragua, where GDP per capital is approximately $2,000, but we don’t know by how much. Cuba does have relatively high levels of health care and education, but we’ve learned from post-Soviet reform experiences that it is easy for a nation to lose those advantages. There are already shortages of many basic health care items, including medical technology and antibiotics."