Dear Timoteo Jazul, Thank you for visiting the KOSIS website. From 2017, the Household Income and Expenditure Survey is carried out by dividing data collection into two parts, i.e. income and expenditure. - Statistics of household income are produced on a quarterly basis. Quarterly income data are released at the end of two months after a given quarter. - Statistics of household expenditure are produced on an annual basis, not quarterly. Annual expenditure data are released at the end of May after a given year. Thank you.