Housing conditions and energy efficiency
Households according to whether they have made improvements to thermal insulation or the heating system, by income quintile per unit of consumption.
Unidades: Horizontal percentages.

	Has made improvements to thermal insulation or the heating system	No improvements have been made and it is warm enough during the cold months	No improvements have been made and it is not warm enough during the cold months	
Total	14,1	60,8	25,1	
First quintile	9	54,6	36,4	
Second quintile	12	56,6	31,4	
Third quintile	13,5	60,9	25,6	
Fourth quintile	16	64,2	19,8	
Fifth quintile	19,9	67,3	12,8	
Notas:
Income per unit of consumption is obtained, for each household, by dividing total household income by the number of units of consumption. The distribution of persons is taken.
Fuente: Instituto Nacional de Estadística