;1st quarter 2019;1st quarter 2020;Change in per cent; A. TOTAL REVENUE;359889;361447;0.4; Operating surplus extraction of petroleum;31945;26118;-18.2; Tax revenue;184590;179643;-2.7; Members' and employers' contribution to the National Insurance Scheme;105671;109874;4.0; Interest and dividends;7931;9320;17.5; Other revenue;29752;36492;22.7; ;;;; B. TOTAL EXPENDITURE;356948;383877;7.5; Operating costs;39299;41297;5.1; Total fixed capital formation;14908;15356;3.0; Total transfers;302741;327224;8.1; ;;;; C. SURPLUS BEFORE NET TRANSFERS TO THE GOVERNMENT PENSION FUND - GLOBAL;2941;-22430;;