pre_text: 5 Staff costs and numbers The aggregate payroll costs of persons employed by the Group were as follows:
table: 2019 2018
table: £m £m
table: Wages and salaries 345.6 325.9
table: Social security costs 71.6 58.7
table: Pension costs 21.5 19.3
table: Total payroll costs 438.7 403.9
question: Analyse this data from a financial earnings document. What was the change in social security costs in 2019 from 2018?