Poland is the regional economic leader in Central Europe, with nearly 40 per cent of the 500 biggest companies in the region (by revenues) as well as a high globalisation rate. The country's largest firms compose the WIG20 and WIG30 indexes, which is traded on the Warsaw Stock Exchange. According to reports made by the National Bank of Poland, the value of Polish foreign direct investments reached almost 300 billion PLN at the end of 2014. The Central Statistical Office estimated that in 2014 there were 1,437 Polish corporations with interests in 3,194 foreign entities.