Note 14. Revenues

Rents and Expense Recoveries

Rents for 2013, 2012 and 2011, respectively, are comprised of the following:


	Years ended December 31,
	2013	2012	2011
Base rents	$ 103,166,000	$ 96,897,000	$ 93,125,000
Percentage rent	804,000	1,001,000	985,000
Straight-line rents	1,387,000	930,000	1,084,000
Amortization of intangible lease liabilities	4,441,000	5,359,000	5,731,000
Total rents	$ 109,798,000	$ 104,187,000	$ 100,925,000

Annual future base rents due to be received under non-cancelable operating leases in effect at December 31, 2013 are approximately as follows (excluding those base rents applicable to properties treated as discontinued operations):


2014		$ 103,574,000
2015		94,377,000
2016		83,577,000
2017		71,808,000
2018		62,758,000
Thereafter		280,816,000
		$ 696,910,000

Total future minimum rents do not include expense recoveries for real estate taxes and operating costs, or percentage rents based upon tenants’ sales volume. Such additional revenue amounts aggregated approximately $29.3 million, $26.5 million and $27.0 million for 2013, 2012 and 2011, respectively. Such amounts do not include amortization of intangible lease liabilities.

Other

Other revenues include items which, although recurring, tend to fluctuate more than rental income from period to period, such as lease termination income. Other revenue includes lease termination income (approximately $3.0 million) and fees earned from the Cedar/RioCan joint venture in 2012. The management agreement relating to the Cedar/RioCan joint venture properties terminated on January 31, 2013 (see Note 5 –“Investment in Cedar/RioCan Joint Venture”).