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        <ManagementAndGeneralAmt>1309</ManagementAndGeneralAmt>
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      <OtherExpensesGrp>
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        <EOYAmt>411673</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
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      <LandBldgEquipAccumDeprecAmt>7752</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>8544</BOYAmt>
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        <EOYAmt>27197</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
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        <EOYAmt>664140</EOYAmt>
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      <DonorRestrictionNetAssetsGrp>
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      <TotalNetAssetsFundBalanceGrp>
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      <TotLiabNetAssetsFundBalanceGrp>
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        <EOYAmt>1899761</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>611110</ReconcilationRevenueExpnssAmt>
      <PriorPeriodAdjustmentsAmt>200002</PriorPeriodAdjustmentsAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
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        <CurrentTaxYearMinus4YearsAmt>757021</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1327045</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>2428376</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1834191</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>2936711</CurrentTaxYearAmt>
        <TotalAmt>9283344</TotalAmt>
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      <TotalCalendarYear170Grp>
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        <CurrentTaxYearMinus3YearsAmt>1327045</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>2428376</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1834191</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>2936711</CurrentTaxYearAmt>
        <TotalAmt>9283344</TotalAmt>
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      <SubstantialContributorsTotAmt>3360718</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>5922626</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>145</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>130</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>122</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>486</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>5580</CurrentTaxYearAmt>
        <TotalAmt>6463</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>1415</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>509</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>2570</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1811</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>6305</TotalAmt>
      </OtherIncome170Grp>
      <TotalSupportAmt>9296112</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>3167698</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.63710</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.71440</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>38023</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>7752</DepreciationAmt>
        <BookValueAmt>30271</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>30271</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>5057647</TotalRevEtcAuditedFinclStmtAmt>
      <RevenueNotReportedAmt>0</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>5057647</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>5057647</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>4446537</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>4446537</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>4446537</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>IN ACCORDANCE WITH FINANCIAL ACCOUNTING STANDARDS BOARD ACCOUNTING STANDARDS CODIFICATION 740-10, ACCOUNTING FOR UNCERTAINTY OF INCOME TAXES WHICH CLARIFIES THE ACCOUNTING FOR THE RECOGNITION AND MEASUREMENT OF THE BENEFITS OF INDIVIDUAL TAX POSITION IN THE FINANCIAL STATEMENTS, INCLUDING THOSE NON-PROFIT ORGANIZATIONS. TAX POSITIONS MUST MEET A RECOGNITION THRESHOLD OF MORE-LIKELY-THAN-NOT IN ORDER FOR THE BENEFITS OF THOSE TAX POSITIONS TO BE RECOGNIZED IN THE FINANCIAL STATEMENTS. SUN ANALYZES TAX POSITIONS TAKEN, INCLUDING THOSE RELATED TO THE REQUIREMENTS SET FORTH IN IRC SEC. 501(C) TO QUALIFY AS TAX EXEMPT ORGANIZATION, ACTIVITIES PERFORMED BY VOLUNTEERS AND BOARD MEMBERS, THE REPORTING OF UNRELATED BUSINESS INCOME, AND ITS STATUS AS A TAX-EXEMPT ORGANIZATION UNDER D.C. STATUTE. THE ORGANIZATION IS NOT AWARE OF ANY TAX BENEFITS ARISING FROM UNCERTAIN TAX POSITIONS AND THERE WAS NO EFFECT ON THE ORGANIZATION'S FINANCIAL POSITION OR CHANGES IN NET ASSETS AS A RESULT OF ANALYZING ITS TAX POSITIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE DIRECTOR AND CHIEF OPERATING OFFICER REVIEW FORM 990 AND RELATED SCHEDULES PRIOR TO E-FILING AND THEIR COMMENTS/CHANGES, IF ANY, ARE INCLUDED IN THE 990 PRIOR TO SUBMISSION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICTS OF INTEREST ARE MONITORS AND UPDATED ANNUALLY. THERE ARE NO CONFLICTS OF INTERESTS IDENTIFIED IN 2019.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION OF OFFICERS AND KEY EMPLOYEES (CONSULTANTS) IS BASED UPON REVIEW OF COMPARABLE SALARIES AND FEES OF OTHER SIMILAR SIZE ORGANIZATIONS. GOVERNING, FINANCIAL, AND PROGRAMMATIC DOCUMENTS AS WELL AS OPERATING POLICIES ARE MADE AVAILABLE TO THE PUBLIC UPON WRITTEN REQUEST. ADDITIONAL FINANCIAL DATA IS INCLUDED IN THE ORGANIZATION'S ANNUAL REPORT POSTED ON ITS WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL ORGANIZATIONAL DOCUMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VIII LINE 2A, 2B, 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>SUN HAS HIRED AN INTERNAL ACCOUNTANT AND CHANGED AUDIT FIRMS, AS SUCH SUN AS RECATEGORIZED SOME REVENUES TO BETTER ALIGN IRS GUIDELINES WITH ITS INCOME CATEGORIES. GOVERNMENT CONTRACTS, SERVICE FEES AND MEMBERSHIP DUES REVENUE HAVE BEEN MOVED TO PROGRAM SERVICES LINE ITEM.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER: PROGRAM SERVICE EXPENSES 1,098,070. MANAGEMENT AND GENERAL EXPENSES 10,286. FUNDRAISING EXPENSES 312. TOTAL EXPENSES 1,108,668.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE OVERSIGHT COMMITTEE IS RESPONSIBLE THROUGH DELEGATION BY ITS GOVERNING BODY FOR (I) OVERSEEING THE COMPILATION, REVIEW, OR AUDIT OF THE FINANCIAL STATEMENTS, AND (II) THE SELECTION OF AN INDEPENDENT ACCOUNTANT THAT COMPILED, REVIEWED, OR AUDITED THE STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>