b'STAATSOLIE MAATSCHAPPIJ SURINAME N.V.NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS FOR THE YEAR ENDED DECEMBER 31, 2020 (Continued)3.2 INFORMATION ABOUT KEY ITEMS COMPRISING OPERATING PROFIT OR LOSSExploration expenses(X US$ 1,000) 2020 2019Employeebenefitsexpense - (2,545)External services- (1,582)DepreciationandamortizationofPPE -(111)Depreciation of leases -(45)Other expenses- (375)Total-(4,658)Offshore expenses(X US$ 1,000) 2020 2019Expensedprojects (78) -DepreciationandamortizationofPPE(51) -Depreciation of leases (59) -Other expenses37 -Total (151) -Selling and distribution expenses (X US$ 1,000) 2020 2019Freight (10,977) (8,405)Employeebenefitsexpense* (3,120) (2,445)Bad debt expense 624 (146)External services(3,306) (2,885)DepreciationandamortizationofPPE (130)(133)Depreciation of leases (58)(51)Maintenanceexpense (1,009) (76)Insurance costs(145)(111)Utility expenses(16) (9)Donations (13) (17)Travelexpenses(3) (10)Other expenses(783) (748)Total (18,936)(15,036)84 STAATSOLIE 2020 ANNUAL REPORT'