15.

Leases

We lease office, retail and storage space to tenants under non-cancellable operating leases. These leases provide for the payment of fixed minimum rents over the terms of the respective lease and generally require tenants to reimburse us for operating costs and real estate taxes above their base year costs.

The following is a schedule of future minimum rents under non-cancelable operating leases as of December 31, 2017, for each of the five succeeding years commencing January 1, 2018.

(Amounts in thousands)
2018	$	589,949
2019		606,003
2020		575,990
2021		511,003
2022		467,944
Thereafter		2,615,260
Total	$	5,366,149