Table 2.

Sociodemographic characteristics of households by year: the National Income and Expenditure Survey, 1994–2020.

Year	1994	1996	1998	2000	2002	2004	2006
Total households (n)	12,527	13,795	10,670	9,929	16,914	22,276	20,608
Education levela, %
Without formal education	16.9	13.6	12.8	12.4	13.5	11.1	9.8
Primary school	49.6	49.7	49.5	46.5	45.0	46.2	56.8
High school	24.4	27.3	27.8	29.4	31.5	32.2	22.3
Higher education	7.3	7.2	7.8	10.0	8.6	10.5	11.1
Urbanicity, %
Rural localities	23.2	22.2	22.3	22.4	23.3	22.3	22.1
Small cities	13.4	13.5	13.4	13.4	13.4	13.7	13.1
Medium cities	14.3	13.4	13.3	13.4	13.4	13.9	14.7
Metropolitan cities	49.1	50.9	51.0	50.9	49.9	50.1	50.1
Year	2008	2010	2012	2014	2016	2018	2020
Total households (n)	29,217	27,415	8,924	19,355	69,850	74,194	88,216
Education levela, %
Without formal education	9.3	8.9	8.9	7.7	7.1	6.7	6.3
Primary school	44.6	42.4	39.9	38.0	36.2	34.5	33.6
High school	35.1	36.7	39.8	41.5	43.6	45.0	46.0
Higher education	11.0	11.9	11.4	12.8	13.1	13.9	14.1
Urbanicity, %
Rural localities	21.3	21.3	21.9	21.9	21.7	23.0	21.5
Small cities	13.8	13.8	13.3	13.5	13.9	14.0	13.7
Medium cities	14.5	14.4	14.4	14.8	14.5	14.7	14.8
Metropolitan cities	50.3	50.5	50.5	49.8	49.9	48.2	50.0

^aCompleted education level of the head of the household.