Nobel Prize-winning economist Paul Krugman coined the term "leprechaun economics" to describe distorted or unsound economic data, which he first used in a tweet on 12 July 2016 in response to the publication by the Irish Central Statistics Office (CSO) that Irish GDP had grown by 26.3%, and Irish GNP had grown by 18.7%, in the 2015 Irish national accounts. The growth was subsequently shown to be due to Apple restructuring its double Irish tax scheme which the EU Commission had fined €13bn in 2004–2014 Irish unpaid taxes, the largest corporate tax fine in history. The term has been used many times since.