is expected to begin by late-2018 , after the necessary information technology infrastructure is in place . entergy louisiana proposed to recover the cost of ami through the implementation of a customer charge , net of certain benefits , phased in over the period 2019 through 2022 . the parties reached an uncontested stipulation permitting implementation of entergy louisiana 2019s proposed ami system , with modifications to the proposed customer charge . in july 2017 the lpsc approved the stipulation . entergy louisiana expects to recover the undepreciated balance of its existing meters through a regulatory asset at current depreciation rates . sources of capital entergy louisiana 2019s sources to meet its capital requirements include : 2022 internally generated funds ; 2022 cash on hand ; 2022 debt or preferred membership interest issuances ; and 2022 bank financing under new or existing facilities . entergy louisiana may refinance , redeem , or otherwise retire debt prior to maturity , to the extent market conditions and interest rates are favorable . all debt and common and preferred membership interest issuances by entergy louisiana require prior regulatory approval . preferred membership interest and debt issuances are also subject to issuance tests set forth in its bond indentures and other agreements . entergy louisiana has sufficient capacity under these tests to meet its foreseeable capital needs . entergy louisiana 2019s receivables from the money pool were as follows as of december 31 for each of the following years. .

2016: ( in thousands ): ( in thousands )
$ 11173: 22503
2015: ( in thousands ): ( in thousands )
$ 11173: 6154
2014: ( in thousands ): ( in thousands )
$ 11173: 2815

see note 4 to the financial statements for a description of the money pool . entergy louisiana has a credit facility in the amount of $ 350 million scheduled to expire in august 2022 . the credit facility allows entergy louisiana to issue letters of credit against $ 15 million of the borrowing capacity of the facility . as of december 31 , 2017 , there were no cash borrowings and a $ 9.1 million letter of credit outstanding under the credit facility . in addition , entergy louisiana is a party to an uncommitted letter of credit facility as a means to post collateral to support its obligations to miso . a0 as of december 31 , 2017 , a $ 29.7 million letter of credit was outstanding under entergy louisiana 2019s uncommitted letter of credit a0facility . see note 4 to the financial statements for additional discussion of the credit facilities . the entergy louisiana nuclear fuel company variable interest entities have two separate credit facilities , one in the amount of $ 105 million and one in the amount of $ 85 million , both scheduled to expire in may 2019 . as of december 31 , 2017 , $ 65.7 million of loans were outstanding under the credit facility for the entergy louisiana river bend nuclear fuel company variable interest entity . as of december 31 , 2017 , $ 43.5 million in letters of credit to support a like amount of commercial paper issued and $ 36.4 million in loans were outstanding under the entergy louisiana waterford nuclear fuel company variable interest entity credit facility . see note 4 to the financial statements for additional discussion of the nuclear fuel company variable interest entity credit facilities . entergy louisiana , llc and subsidiaries management 2019s financial discussion and analysis .

Questions:
what were receivables in 2017?
what were they in 2016?
what is the sum for 2016 and 2017?
what is the sum including 2015?
what is the total sum including 2014?

Answers:
11173
22503
33676
39830
42645