Unit2011201220132014201520162017
RevenueEUR
million
11.917.521.633.666.180.782.5
Gross profitEUR
million
5.98.710.918.236.441.244.8
Adjusted EBITDA1EUR
million
1.21.92.54.58.12.62.0
Adjusted EBITDA margin (as % of revenue)1%10.011.111.513.412.23.22.4

1 EBITDA adjusted for one-off costs (please refere to the annual reports for detailed information of the respective year)