I hadn't seen this report. I expected the 1918 / 20 period to be significantly affected by the Spanish Flu epidemic given that it was believed to have been brought into the UK via the Glasgow Docks. The Registrar General for Scotland report for 1918 recorded that 78,372 deaths (39,144 male and 39,228 female) were registered in 1918. The report confirmed that at least 17,575 deaths that year were attributable to influenza. This was probably an underestimation; some deaths were ascribed to other causes and complications due to the presence of influenza, for example, ‘bronchitis’ or ‘pneumonia’? Perhaps this means that the "flu" killed sufficient numbers in these times for the excess not to be considered excessive>