One of Europe's major financial hubs is centred around Dublin. Ireland ranks among the top ten wealthiest countries in the world in terms of GDP per capita, although this has been partially ascribed to distortions caused by the tax inversion practices of various multinationals operating in Ireland. From 2017, a modified gross national income (GNI*) was enacted by the Central Bank of Ireland, as the standard deviation was considered too materially distorted to accurately measure or represent the Irish economy. After joining the EC, the country's government enacted a series of liberal economic policies that resulted in economic growth between 1995 and 2007 now known as the Celtic Tiger period, before its subsequent reversal during the Great Recession.