;3rd quarter 2017;4th quarter 2017;1st quarter 2018;Change in per cent;Change in per cent;Change in per cent; 3rd quarter 2017 / 2nd quarter 2017;4th quarter 2017 / 3rd quarter 2017;1st quarter 2018 / 4th quarter 2017; Extraction, pipeline, mining, manuf. and elec;165.9;176.2;164.6;-3.0;6.2;-6.6; Extraction and pipeline transport;152.0;167.4;153.4;-11.2;10.1;-8.4; Manufacturing, mining and quarrying;112.0;119.6;120.4;2.8;6.8;0.7; Mining and quarrying;87.2;77.0;186.9;4.1;-11.7;142.7; Manufacturing;113.0;120.6;118.8;2.9;6.7;-1.5; Electricity, gas and steam;430.5;377.0;400.0;37.8;-12.4;6.1;