LEASES

As Lessor

We lease space to tenants under operating leases which expire from 2019 to 2072. The leases provide for the payment of fixed base rents payable monthly in advance as well as reimbursements of real estate taxes, insurance and maintenance costs. Retail leases may also provide for the payment by the lessee of additional rents based on a percentage of their sales.

Future base rental revenue under these non-cancelable operating leases is as follows:



(Amounts in thousands)
Year Ending December 31,
2019	$	256,598
2020	235,652
2021	216,247
2022	198,449
2023	176,282
Thereafter	986,865

These future minimum amounts do not include additional rents based on a percentage of tenants’ sales and tenant expense reimbursements. For the years ended December 31, 2018, 2017 and 2016, rental revenue from percentage rent was $2.0 million, $1.2 million, and $0.8 million, respectively. For the years ended December 31, 2018, 2017 and 2016, rental revenue from tenant expense reimbursements was $108.7 million, $99.1 million, and $84.9 million, respectively.

As Lessee

We are a tenant under long-term ground leases or ground and building leases for certain of our properties. We are also a tenant under leases pertaining to office space from which we conduct our business. Lease expirations range from 2019 to 2061. Future lease payments under these agreements are as follows:



(Amounts in thousands)
Year Ending December 31,
2019	$	10,640
2020	9,614
2021	8,957
2022	8,982
2023	8,850
Thereafter	85,535