k€

  ​ ​ ​

2025

  ​ ​ ​

2024

  ​ ​ ​

2023

Personnel expenses (total)

​

456,536

​

458,738

​

377,587

Thereof:

  ​

  ​

  ​

Personnel expenses outside of Germany

338,850

340,362

256,259

Statutory retirement insurance

23,972

25,146

17,041

Statutory retirement insurance outside of Germany

20,446

21,094

9,788

Social security expenses

64,917

62,136

58,276