;Seasonally adjusted, per cent;Working day adjusted, per cent;Index; 4th quarter 2017 - 1st quarter 2018;1st quarter 2017 - 1st quarter 2018;1st quarter 2018; Total;-0.1;2.8;107.5; Buildings, total;0.0;2.9;111.1; Civil engineering works;-4.0;1.8;96.2;