East Germany

Mid Germany

• Herford (1)

Northeast Germany

• Potsdam/Brandenburg (1)

Northern Germany

• Bremerhaven (1)
• Hamburg (2)

Rhein-Main Area

• Bonn (3)
• Cologne (1)
• Trier (1)

Ruhr Area

• Dortmund (2)
• Düsseldorf (2)
• Essen (1)
• Mönchengladbach (1)
• Wuppertal (6)

Saarland

• Frankfurt on Main (1)

South East Germany

• Erlangen (1)
• Passau (3)
• Regensburg (2)

South Germany

• Ingolstadt (1)

South West Germany

• Göppingen (1)
• Karlsruhe (1)
• Stuttgart (1)
• Tübingen (1)