Figure 8: Scottish average nominal earnings growth forecast, calendar year basis Scottish Fiscal Commission Scotland's Economic and Fiscal Forecasts December 2018The stronger than expected GDP performance over the last two years was primarily because of revisions to construction industry activity. Growth in construction industry activity in 2015 was revised down from 18.3% to 6.2%, while for 2017 it was revised up from 3.8% to 4.3%.