That suggests a buoyant sector with engineering companies like Bombardier, Wrightbus and FG Wilson all doing well.

BBC: NI economy remains 'fragile'

She said she had received a written guarantee from FG Wilson that it still had a long-term commitment to Northern Ireland.

BBC: FG Wilson: 760 jobs to go in Northern Ireland

The council areas showing the highest percentage increase over the year to February 2013 were Larne, 24.8%, probably reflecting the lay-offs at FG Wilson, Magherafelt, 16.1%, and Ards, 11.3%.

BBC: Northern Ireland unemployment highest in 15 years