;3rd quarter 2018;3rd quarter 2019;Change in per cent; A. TOTAL REVENUE;324043;314098;-3.1; Operating surplus extraction of petroleum;28981;19317;-33.3; Tax revenue;159366;157806;-1.0; Members' and employers' contribution to the National Insurance Scheme;106191;111307;4.8; Interest and dividends;15218;11457;-24.7; Other revenue;14287;14211;-0.5; ;;;; B. TOTAL EXPENDITURE;294048;322556;9.7; Operating costs;38037;39168;3.0; Total fixed capital formation;16241;17296;6.5; Total transfers;239770;266092;11.0; ;;;; C. SURPLUS BEFORE NET TRANSFERS TO THE GOVERNMENT PENSION FUND - GLOBAL;29995;-8458;;