Overall, our 10 largest tenants are only responsible for one quarter of our rental incomes which shows that there is no major dependency on individual tenants. LONG-TERM RENTAL CONTRACTS Our standard rental contracts have a ten-year term. The weighted residual term at 31 December 2011 was 7.4 years with 69% of our rental con- tracts being secured until at least 2017. EXTERNAL CENTER MANAGEMENT Our long-term partner ECE Projektmanage- ment has been engaged to manage our 19 shopping centers. In addition, ECE imple- mented the development of the A10 Triangle as well as the expansions of the Main-Tau- nus-Zentrum in Sulzbach and the Altmarkt- Galerie in Dresden on our behalf. ECE was founded in 1965 by mail-order pio- neer Werner Otto and is held by the Otto family. It develops, plans, rents and manages The ten largest tenants (share of rental income in %) Metro Group 6.0% Douglas Group 4.4% H&M 2.7% New Yorker 2.3% Deichmann 1.9% Peek & Cloppenburg 1.9% C&A 1.7% REWE 1.6% Inditex Group 1.4% Esprit 1.4% Total of top 10 tenants: 25.3% Other tenants: 74.7% As at: 31 December 2011 Terms of rental contracts (term of contracts, share in %) 2012 3% 2013 2% 2014 8% 2015 8% 2016 10% 2017 et sqq. 69% As at: 31 December 2011 neer Werner Otto and is held by the Otto family. It develops, plans, rents and manages Jeans skirt with a star print from Marc Cain Slim-fit knit jumper from Marc Cain Stadt-Galerie Passau Ballerinas with golden toe from Görtz 34 DES Annual Report 2011 THE CENTERS portfolio