pre_text: 17. Personnel expenses Personnel expenses can be broken down as follows: Wages and salaries include expenses relating to restructuring measures and severance payments of €23 million (2017/18: €19 million). The variable remuneration rose from €52 million in financial year 2017/18 to €81 million in financial year 2018/19. Wages and salaries also include expenses for long-term remuneration components totalling €7 million (2017/18: €16 million).
table: € million 2017/2018 2018/2019
table: Wages and salaries 2,173 2,264
table: Social security expenses, expenses for post-employment benefits and related employee benefits 552 552
table: thereof for post-employment benefits (43) (41)
table: 2,725 2,816
question: Analyse this data from a financial earnings document. What was the percentage change in personnel expenses in 2018/2019 from 2017/2018?