Exports in 2018 again increased 7.8% by value, and 3.6% in number of bottles, in spite of the duty imposed in 2017; exports grew to a record level, £4.7 billion. The US imported Scotch whisky with a value of just over £1 billion while the European Union was the second largest importer, taking 30% of global value. This was a boom year with a record high in exports, but the Scotch Whisky Association expressed concern for the future, particularly "the challenges posed by Brexit and by tensions in the global trading system".