THE AES CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued) DECEMBER 31, 2017, 2016, AND 2015 163 was dispatched starting in February 2018.  AES Puerto Rico continues to be the lowest cost and EPA compliant energy provider in Puerto Rico.
Therefore, we expect AES Puerto Rico to continue to be a critical supplier to PREPA.
Starting prior to the hurricanes, PREPA has been facing economic challenges that could impact the Company, and on July 2, 2017, filed for bankruptcy under Title III.
As a result of the bankruptcy filing, AES Puerto Rico and AES Ilumina’s non-recourse debt of $365 million and $36 million, respectively, is in default and has been classified as current as of December 31, 2017.
In November 2017, AES Puerto Rico signed a Forbearance and Standstill Agreement with its lenders to prevent the lenders from taking any action against the company due to the default events.
This agreement will expire on March 22, 2018.
The Company's receivable balances in Puerto Rico as of December 31, 2017 totaled $86 million, of which $53 million was overdue.
After the filing of Title III protection, and up until the disruption caused by the hurricanes, AES in Puerto Rico was collecting the overdue amounts from PREPA in line with historic payment patterns.
Considering the information available as of the filing date, management believes the carrying amount of our assets in Puerto Rico of $627 million is recoverable as of December 31, 2017 and no reserve on the receivables is required.
Foreign Currency Risks — AES operates businesses in many foreign countries and such operations could be impacted by significant fluctuations in foreign currency exchange rates.
Fluctuations in currency exchange rate between U. S.  dollar and the following currencies could create significant fluctuations in earnings and cash flows: the Argentine peso, the Brazilian real, the Dominican Republic peso, the Euro, the Chilean peso, the Colombian peso, and the Philippine peso.
Concentrations — Due to the geographical diversity of its operations, the Company does not have any significant concentration of customers or sources of fuel supply.
Several of the Company's generation businesses rely on PPAs with one or a limited number of customers for the majority of, and in some cases all of, the relevant businesses' output over the term of the PPAs.
However, no single customer accounted for 10% or more of total revenue in 2017, 2016 or 2015.
The cash flows and results of operations of our businesses depend on the credit quality of our customers and the continued ability of our customers and suppliers to meet their obligations under PPAs and fuel supply agreements.
If a substantial portion of the Company's long-term PPAs and/or fuel supply were modified or terminated, the Company would be adversely affected to the extent that it would be unable to replace such contracts at equally favorable terms.26.
RELATED PARTY TRANSACTIONS Certain of our businesses in Panama and the Dominican Republic are partially owned by governments either directly or through state-owned institutions.
In the ordinary course of business, these businesses enter into energy purchase and sale transactions, and transmission agreements with other state-owned institutions which are controlled by such governments.
At two of our generation businesses in Mexico, the offtakers exercise significant influence, but not control, through representation on these businesses' Boards of Directors.
These offtakers are also required to hold a nominal ownership interest in such businesses.
In Chile, we provide capacity and energy under contractual arrangements to our investment which is accounted for under the equity method of accounting.
Additionally, the Company provides certain support and management services to several of its affiliates under various agreements.
The Company's Consolidated Statements of Operations included the following transactions with related parties for the periods indicated (in millions):
## Table 0 ##
Principal Financial Group, Inc.  Notes to Consolidated Financial Statements — (continued) 1.
Nature of Operations and Significant Accounting Policies — (continued) revenue associated with the new contract are deferred and amortized over the lifetime of the new contract.
In addition, the existing DPAC, sales inducement costs and unearned revenue balances associated with the replaced contract are written off.
If an internal replacement results in a substantially unchanged contract, the acquisition costs, sales inducements and unearned revenue associated with the new contract are immediately recognized in the period incurred.
In addition, the existing DPAC, sales inducement costs or unearned revenue balance associated with the replaced contract is not written off, but instead is carried over to the new contract.
Long-Term Debt Long-term debt includes notes payable, nonrecourse mortgages and other debt with a maturity date greater than one year at the date of issuance.
Current maturities of long-term debt are classified as long-term debt in our statement of financial position.
Reinsurance We enter into reinsurance agreements with other companies in the normal course of business.
We may assume reinsurance from or cede reinsurance to other companies.
Assets and liabilities related to reinsurance ceded are reported on a gross basis.
Premiums and expenses are reported net of reinsurance ceded.
The cost of reinsurance related to long-duration contracts is accounted for over the life of the underlying reinsured policies using assumptions consistent with those used to account for the underlying policies.
We are contingently liable with respect to reinsurance ceded to other companies in the event the reinsurer is unable to meet the obligations it has assumed.
At December 31, 2009 and 2008, our largest exposures to a single third-party reinsurer in our individual life insurance business was $22.0 billion and $18.5 billion of life insurance in force, representing 14% and 11% of total net individual life insurance in force, respectively.
The financial statement exposure is limited to the reinsurance recoverable related to this single third party reinsurer, which was $26.8 million and $18.1 million at December 31, 2009 and 2008, respectively.
The effects of reinsurance on premiums and other considerations and policy and contract benefits were as follows:
## Table 1 ##
Separate Accounts The separate account assets presented in the consolidated financial statements represent the fair market value of funds that are separately administered by us for contracts with equity, real estate and fixed income investments.
The separate account contract owner, rather than us, bears the investment risk of these funds.
The separate account assets are legally segregated and are not subject to claims that arise out of any of our other business.
We receive fees for mortality, withdrawal, and expense risks, as well as administrative, maintenance and investment advisory services that are included in the consolidated statements of operations.
Net deposits, net investment income and realized and unrealized capital gains and losses on the separate accounts are not reflected in the consolidated statements of operations.
At December 31, 2009 and 2008, the separate accounts include a separate account valued at $191.5 million and $207.4 million, respectively, which primarily includes shares of our stock that were allocated and issued to eligible participants of qualified employee benefit plans administered by us as part of the policy credits issued under our 2001 demutualization.
These shares are included in both basic and diluted earnings per share calculations.
In the consolidated statements of financial position, the separate account shares are recorded at fair value and are reported as separate account assets with a corresponding separate account liability to eligible participants of the qualified plan.
Changes in fair
Principal Financial Group, Inc.  Notes to Consolidated Financial Statements — (continued) 12.
Employee and Agent Benefits — (continued) Estimated Future Benefit Payments The estimated future benefit payments, which reflect expected future service, and the expected amount of tax-free subsidy receipts under Medicare Part D are:
## Table 2 ##
The above table reflects the total estimated future benefits to be paid from the plan, including both our share of the benefit cost and the participants’ share of the cost, which is funded by their contributions to the plan.
The assumptions used in calculating the estimated future benefit payments are the same as those used to measure the benefit obligation for the year ended December 31, 2009.
The information that follows shows supplemental information for our defined benefit pension plans.
Certain key summary data is shown separately for qualified and non-qualified plans.
## Table 3 ##
In addition, we have defined contribution plans that are generally available to all U. S.  employees and agents.
Eligible participants could not contribute more than $16,500 of their compensation to the plans in 2009.
Effective January 1, 2006, we made several changes to the retirement programs.
In general, the pension and supplemental executive retirement plan benefit formulas were reduced, and the 401(k) matching contribution was increased.
Employees who were ages 47 or

<table><tr><td>Years Ended December 31,</td><td>2017</td><td>2016</td><td>2015</td></tr><tr><td>Revenue—Non-Regulated</td><td>$1,297</td><td>$1,100</td><td>$1,099</td></tr><tr><td>Cost of Sales—Non-Regulated</td><td>220</td><td>210</td><td>330</td></tr><tr><td>Interest income</td><td>8</td><td>4</td><td>25</td></tr><tr><td>Interest expense</td><td>36</td><td>39</td><td>33</td></tr></table>
<table><tr><td></td><td colspan="3">For the year ended December 31,</td></tr><tr><td></td><td>2009</td><td>2008</td><td>2007</td></tr><tr><td></td><td colspan="3">(in millions)</td></tr><tr><td>Premiums and other considerations:</td><td></td><td></td><td></td></tr><tr><td>Direct</td><td>$4,047.6</td><td>$4,495.1</td><td>$4,751.3</td></tr><tr><td>Assumed</td><td>5.2</td><td>9.7</td><td>160.0</td></tr><tr><td>Ceded</td><td>-302.2</td><td>-295.6</td><td>-277.2</td></tr><tr><td>Net premiums and other considerations</td><td>$3,750.6</td><td>$4,209.2</td><td>$4,634.1</td></tr><tr><td>Benefits, claims and settlement expenses:</td><td></td><td></td><td></td></tr><tr><td>Direct</td><td>$5,564.5</td><td>$6,440.8</td><td>$6,489.7</td></tr><tr><td>Assumed</td><td>38.9</td><td>43.5</td><td>190.4</td></tr><tr><td>Ceded</td><td>-268.9</td><td>-264.4</td><td>-244.8</td></tr><tr><td>Net benefits, claims and settlement expenses</td><td>$5,334.5</td><td>$6,219.9</td><td>$6,435.3</td></tr></table>
<table><tr><td> </td><td> Pension benefits</td><td> Other postretirement benefits (gross benefit payments, including prescription drug benefits)</td><td> Amount of Medicare Part D subsidy receipts</td></tr><tr><td> </td><td colspan="3"><i>(in millions)</i> </td></tr><tr><td>Year ending December 31:</td><td></td><td></td><td></td></tr><tr><td>2010</td><td>$71.9</td><td>$23.7</td><td>$1.1</td></tr><tr><td>2011</td><td>75.9</td><td>25.8</td><td>1.2</td></tr><tr><td>2012</td><td>81.5</td><td>28.1</td><td>1.5</td></tr><tr><td>2013</td><td>87.1</td><td>30.7</td><td>1.6</td></tr><tr><td>2014</td><td>93.4</td><td>33.5</td><td>1.9</td></tr><tr><td>2015-2019</td><td>559.2</td><td>217.7</td><td>13.5</td></tr></table>
<table><tr><td> </td><td colspan="6">For the year ended December 31,</td></tr><tr><td> </td><td colspan="3">2009</td><td colspan="3">2008</td></tr><tr><td> </td><td>Qualified plan</td><td>Nonqualified plans</td><td>Total</td><td>Qualified plan</td><td>Nonqualified plans</td><td>Total</td></tr><tr><td> </td><td colspan="6">(in millions)</td></tr><tr><td> Amount recognized in statement of financial position</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other assets</td><td>$—</td><td>$—</td><td>$—</td><td>$—</td><td>$—</td><td>$—</td></tr><tr><td>Other liabilities</td><td>-249.9</td><td>-297.2</td><td>-547.1</td><td>-399.1</td><td>-302.5</td><td>-701.6</td></tr><tr><td>Total</td><td>$-249.9</td><td>$-297.2</td><td>$-547.1</td><td>$-399.1</td><td>$-302.5</td><td>$-701.6</td></tr><tr><td> Amount recognized in accumulated other comprehensive loss</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Total net actuarial loss</td><td>$495.0</td><td>$69.9</td><td>$564.9</td><td>$690.3</td><td>$77.9</td><td>$768.2</td></tr><tr><td>Prior service cost benefit</td><td>-33.9</td><td>-18.8</td><td>-52.7</td><td>-28.6</td><td>-10.9</td><td>-39.5</td></tr><tr><td>Total pre-tax accumulated other comprehensive loss</td><td>$461.1</td><td>$51.1</td><td>$512.2</td><td>$661.7</td><td>$67.0</td><td>$728.7</td></tr><tr><td> Components of net periodic benefit cost</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Service cost</td><td>$41.8</td><td>$9.6</td><td>$51.4</td><td>$50.5</td><td>$11.5</td><td>$62.0</td></tr><tr><td>Interest cost</td><td>83.0</td><td>17.8</td><td>100.8</td><td>100.2</td><td>24.1</td><td>124.3</td></tr><tr><td>Expected return on plan assets</td><td>-79.5</td><td>—</td><td>-79.5</td><td>-162.8</td><td>—</td><td>-162.8</td></tr><tr><td>Amortization of prior service cost benefit</td><td>-5.4</td><td>-2.3</td><td>-7.7</td><td>-6.7</td><td>-2.9</td><td>-9.6</td></tr><tr><td>Recognized net actuarial (gain) loss</td><td>86.5</td><td>6.1</td><td>92.6</td><td>-9.4</td><td>10.9</td><td>1.5</td></tr><tr><td>Net periodic benefit cost (income)</td><td>$126.4</td><td>$31.2</td><td>$157.6</td><td>$-28.2</td><td>$43.6</td><td>$15.4</td></tr><tr><td> Other changes recognized in accumulated other comprehensive (income) loss</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Net actuarial (gain) loss</td><td>$-108.8</td><td>$-1.9</td><td>$-110.7</td><td>$740.6</td><td>$-13.4</td><td>$727.2</td></tr><tr><td>Prior service benefit</td><td>-10.7</td><td>-10.2</td><td>-20.9</td><td>—</td><td>—</td><td>—</td></tr><tr><td>Amortization of net gain (loss)</td><td>-86.5</td><td>-6.1</td><td>-92.6</td><td>9.4</td><td>-10.9</td><td>-1.5</td></tr><tr><td>Amortization of prior service cost benefit</td><td>5.4</td><td>2.3</td><td>7.7</td><td>6.7</td><td>2.9</td><td>9.6</td></tr><tr><td>Total recognized in pre-tax accumulated other comprehensive (income) loss</td><td>$-200.6</td><td>$-15.9</td><td>$-216.5</td><td>$756.7</td><td>$-21.4</td><td>$735.3</td></tr><tr><td> Total recognized in net periodic benefit cost and pre-tax accumulated other comprehensive (income) loss</td><td>$-74.2</td><td>$15.3</td><td>$-58.9</td><td>$728.5</td><td>$22.2</td><td>$750.7</td></tr></table>

Question: what percentage of the company's receivable balances in puerto rico as of december 31 , 2017 was past due?
Answer: 0.61628