Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.


vornado realty trust notes to consolidated financial statements ( continued ) 17 . leases as lessor : we lease space to tenants under operating leases . most of the leases provide for the payment of fixed base rentals payable monthly in advance . office building leases generally require the tenants to reimburse us for operating costs and real estate taxes above their base year costs . shopping center leases provide for pass-through to tenants the tenant 2019s share of real estate taxes , insurance and maintenance . shopping center leases also provide for the payment by the lessee of additional rent based on a percentage of the tenants 2019 sales . as of december 31 , 2011 , future base rental revenue under non-cancelable operating leases , excluding rents for leases with an original term of less than one year and rents resulting from the exercise of renewal options , is as follows : ( amounts in thousands ) year ending december 31: . <table class='wikitable'><tr><td>1</td><td>2012</td><td>$ 1807885</td></tr><tr><td>2</td><td>2013</td><td>1718403</td></tr><tr><td>3</td><td>2014</td><td>1609279</td></tr><tr><td>4</td><td>2015</td><td>1425804</td></tr><tr><td>5</td><td>2016</td><td>1232154</td></tr><tr><td>6</td><td>thereafter</td><td>6045584</td></tr></table> these amounts do not include percentage rentals based on tenants 2019 sales . these percentage rents approximated $ 8482000 , $ 7912000 and $ 8394000 , for the years ended december 31 , 2011 , 2010 and 2009 , respectively . none of our tenants accounted for more than 10% ( 10 % ) of total revenues in any of the years ended december 31 , 2011 , 2010 and 2009 . former bradlees locations pursuant to a master agreement and guaranty , dated may 1 , 1992 , we are due $ 5000000 per annum of additional rent from stop & shop which was allocated to certain bradlees former locations . on december 31 , 2002 , prior to the expiration of the leases to which the additional rent was allocated , we reallocated this rent to other former bradlees leases also guaranteed by stop & shop . stop & shop is contesting our right to reallocate and claims that we are no longer entitled to the additional rent . on november 7 , 2011 , the court determined that we have a continuing right to allocate the annual rent to unexpired leases covered by the master agreement and guaranty and directed entry of a judgment in our favor ordering stop & shop to pay us the unpaid annual rent ( see note 20 2013 commitments and contingencies 2013 litigation ) . as of december 31 , 2011 , we have a $ 41983000 receivable from stop and shop. .
Question: what was the total of percentage rentals based on tenants 2019 sales in 2011?
Answer: 8482000.0
Question: and what was it in 2010?
Answer: 7912000.0
Question: what was, then, the total of percentage rentals in both years combined?

16394000.0