in € million | 2021 | 2020 | 2019 | 2018 | 2017 |
Sales | 3,825.7 | 3,520.5 | 3,407.9 | 3,154.0 | 2,996.3 |
EBITDA1,3 | 813.6 | 742.1 | 701.4 | 630.5 | 630.3 |
EBITDA margin1,3 | 21.3 | 21.1 | 20.6 | 20.0 | 21.0 |
Net income1,2,3 | 374.9 | 306.9 | 296.2 | 275.3 | 270.3 |
Research and development expenses 1,3 | 220.7 | 212.3 | 213.4 | 200.4 | 196.4 |