Passage: In 2018, Slovakia was ranked by the International Monetary Fund as the 37th richest country in the world (out of 187 countries), with purchasing power parity per capita GDP of $35,130. The country used to be dubbed the "Tatra Tiger". Slovakia successfully transformed from a centrally planned economy to a market-driven economy. Major privatisations are completed, the banking sector is almost completely in private hands, and foreign investment has risen.

Question: What did Slovakia successfully transform into?
market-driven economy